| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /// getID3() by James Heinrich <[email protected]>               // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | //  available at https://github.com/JamesHeinrich/getID3       // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | //            or https://www.getid3.org                        // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | //            or http://getid3.sourceforge.net                 // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | //                                                             // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | // extension.cache.mysqli.php - part of getID3()               // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | // Please see readme.txt for more information                  // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | //                                                             // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | //                                                             // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | // extension.cache.sqlite3.php - part of getID3()              // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | // Please see readme.txt for more information                  // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | //                                                             // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | ///                                                            // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | // MySQL extension written by Allan Hansen <ahØartemis*dk>     // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | // Table name mod by Carlo Capocasa <calroØcarlocapocasa*com>  // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | // MySQL extension was reworked for SQLite3 by                 // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | //   Karl G. Holz <newaeonØmac*com>                            // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | //                                                            /// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | ///////////////////////////////////////////////////////////////// | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | * This is a caching extension for getID3(). It works the exact same | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | * way as the getID3 class, but return cached information much faster | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | *    Normal getID3 usage (example): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | *       require_once 'getid3/getid3.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | *       $getID3 = new getID3; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | *       $getID3->encoding = 'UTF-8'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | *       $info1 = $getID3->analyze('file1.flac'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | *       $info2 = $getID3->analyze('file2.wv'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | *    getID3_cached usage: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | *       require_once 'getid3/getid3.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | *       require_once 'getid3/extension.cache.sqlite3.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | *       // all parameters are optional, defaults are: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | *       $getID3 = new getID3_cached_sqlite3($table='getid3_cache', $hide=FALSE); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | *       $getID3->encoding = 'UTF-8'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | *       $info1 = $getID3->analyze('file1.flac'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | *       $info2 = $getID3->analyze('file2.wv'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | * Supported Cache Types    (this extension) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | *   SQL Databases: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | *   cache_type          cache_options | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | *   ------------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | *   mysql               host, database, username, password | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | *   sqlite3             table='getid3_cache', hide=false        (PHP5) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | * ***  database file will be stored in the same directory as this script, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | * ***  webserver must have write access to that directory! | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | * ***  set $hide to TRUE to prefix db file with .ht to pervent access from web client | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | * ***  this is a default setting in the Apache configuration: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | * The following lines prevent .htaccess and .htpasswd files from being viewed by Web clients. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | * <Files ~ "^\.ht"> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | *     Order allow,deny | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | *     Deny from all | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | *     Satisfy all | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | * </Files> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | ******************************************************************************** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | *   ------------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | *   DBM-Style Databases:    (use extension.cache.dbm) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | *   cache_type          cache_options | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | *   ------------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | *   gdbm                dbm_filename, lock_filename | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | *   ndbm                dbm_filename, lock_filename | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | *   db2                 dbm_filename, lock_filename | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | *   db3                 dbm_filename, lock_filename | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | *   db4                 dbm_filename, lock_filename  (PHP5 required) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | *   PHP must have write access to both dbm_filename and lock_filename. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | * Recommended Cache Types | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | *   Infrequent updates, many reads      any DBM | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | *   Frequent updates                    mysql | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | ******************************************************************************** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | * IMHO this is still a bit slow, I'm using this with MP4/MOV/ M4v files | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | * there is a plan to add directory scanning and analyzing to make things work much faster | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | * | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 97 |  |  | */ | 
            
                                                                        
                            
            
                                    
            
            
                | 98 |  |  | class getID3_cached_sqlite3 extends getID3 | 
            
                                                                        
                            
            
                                    
            
            
                | 99 |  |  | { | 
            
                                                                        
                            
            
                                    
            
            
                | 100 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 101 |  |  | 	 * hold the sqlite db | 
            
                                                                        
                            
            
                                    
            
            
                | 102 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 103 |  |  | 	 * @var SQLite3 Resource | 
            
                                                                        
                            
            
                                    
            
            
                | 104 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 105 |  |  | 	private $db; | 
            
                                                                        
                            
            
                                    
            
            
                | 106 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 107 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 108 |  |  | 	 * table to use for caching | 
            
                                                                        
                            
            
                                    
            
            
                | 109 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 110 |  |  | 	 * @var string $table | 
            
                                                                        
                            
            
                                    
            
            
                | 111 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 112 |  |  | 	private $table; | 
            
                                                                        
                            
            
                                    
            
            
                | 113 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 114 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 115 |  |  | 	 * @param string  $table holds name of sqlite table | 
            
                                                                        
                            
            
                                    
            
            
                | 116 |  |  | 	 * @param boolean $hide | 
            
                                                                        
                            
            
                                    
            
            
                | 117 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 118 |  |  | 	 * @throws getid3_exception | 
            
                                                                        
                            
            
                                    
            
            
                | 119 |  |  | 	 * @throws Exception | 
            
                                                                        
                            
            
                                    
            
            
                | 120 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	public function __construct($table='getid3_cache', $hide=false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 		// Check for SQLite3 support | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 		if (!function_exists('sqlite_open')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 			throw new Exception('PHP not compiled with SQLite3 support.'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 		$this->table = $table; // Set table | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 		$file = dirname(__FILE__).'/'.basename(__FILE__, 'php').'sqlite'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		if ($hide) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 			$file = dirname(__FILE__).'/.ht.'.basename(__FILE__, 'php').'sqlite'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 		$this->db = new SQLite3($file); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 		$db = $this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 		$this->create_table();   // Create cache table if not exists | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 		$version = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 		$sql = $this->getQuery('version_check'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 		$stmt = $db->prepare($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 		$stmt->bindValue(':filename', getID3::VERSION, SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 		$result = $stmt->execute(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 		list($version) = $result->fetchArray(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 		if ($version != getID3::VERSION) { // Check version number and clear cache if changed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 			$this->clear_cache(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 		parent::__construct(); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 145 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 147 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 148 |  |  | 	 * close the database connection | 
            
                                                                        
                            
            
                                    
            
            
                | 149 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 	public function __destruct() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 		$db=$this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 		$db->close(); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 153 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 154 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 155 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 156 |  |  | 	 * clear the cache | 
            
                                                                        
                            
            
                                    
            
            
                | 157 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 158 |  |  | 	 * @return SQLite3Result | 
            
                                                                        
                            
            
                                    
            
            
                | 159 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 	private function clear_cache() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 		$db = $this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 		$sql = $this->getQuery('delete_cache'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 		$db->exec($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		$sql = $this->getQuery('set_version'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 		$stmt = $db->prepare($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 		$stmt->bindValue(':filename', getID3::VERSION, SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 		$stmt->bindValue(':dirname', getID3::VERSION, SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 		$stmt->bindValue(':val', getID3::VERSION, SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 		return $stmt->execute(); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 170 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 171 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 172 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 173 |  |  | 	 * analyze file and cache them, if cached pull from the db | 
            
                                                                        
                            
            
                                    
            
            
                | 174 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 175 |  |  | 	 * @param string  $filename | 
            
                                                                        
                            
            
                                    
            
            
                | 176 |  |  | 	 * @param integer $filesize | 
            
                                                                        
                            
            
                                    
            
            
                | 177 |  |  | 	 * @param string  $original_filename | 
            
                                                                        
                            
            
                                    
            
            
                | 178 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 179 |  |  | 	 * @return mixed|false | 
            
                                                                        
                            
            
                                    
            
            
                | 180 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 	public function analyze($filename, $filesize=null, $original_filename='') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 		if (!file_exists($filename)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 			return false; | 
                            
                    |  |  |  | 
                                                                                        
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                | 184 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 		// items to track for caching | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 		$filetime = filemtime($filename); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 		$filesize_real = filesize($filename); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 		// this will be saved for a quick directory lookup of analized files | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 		// ... why do 50 seperate sql quries when you can do 1 for the same result | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 		$dirname  = dirname($filename); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 		// Lookup file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 		$db = $this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 		$sql = $this->getQuery('get_id3_data'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  | 		$stmt = $db->prepare($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 		$stmt->bindValue(':filename', $filename,      SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 		$stmt->bindValue(':filesize', $filesize_real, SQLITE3_INTEGER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 		$stmt->bindValue(':filetime', $filetime,      SQLITE3_INTEGER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 		$res = $stmt->execute(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 		list($result) = $res->fetchArray(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 		if (count($result) > 0 ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 			return unserialize(base64_decode($result)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 		// if it hasn't been analyzed before, then do it now | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 		$analysis = parent::analyze($filename, $filesize, $original_filename); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 		// Save result | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 		$sql = $this->getQuery('cache_file'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  | 		$stmt = $db->prepare($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  | 		$stmt->bindValue(':filename', $filename,                           SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 		$stmt->bindValue(':dirname',  $dirname,                            SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 		$stmt->bindValue(':filesize', $filesize_real,                      SQLITE3_INTEGER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  | 		$stmt->bindValue(':filetime', $filetime,                           SQLITE3_INTEGER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 		$stmt->bindValue(':atime',    time(),                              SQLITE3_INTEGER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 		$stmt->bindValue(':val',      base64_encode(serialize($analysis)), SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 		$res = $stmt->execute(); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 		return $analysis; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 216 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 217 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 218 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 219 |  |  | 	 * create data base table | 
            
                                                                        
                            
            
                                    
            
            
                | 220 |  |  | 	 * this is almost the same as MySQL, with the exception of the dirname being added | 
            
                                                                        
                            
            
                                    
            
            
                | 221 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 222 |  |  | 	 * @return bool | 
            
                                                                        
                            
            
                                    
            
            
                | 223 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  | 	private function create_table() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  | 		$db = $this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  | 		$sql = $this->getQuery('make_table'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  | 		return $db->exec($sql); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 228 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 229 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 230 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 231 |  |  | 	 * get cached directory | 
            
                                                                        
                            
            
                                    
            
            
                | 232 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 233 |  |  | 	 * This function is not in the MySQL extention, it's ment to speed up requesting multiple files | 
            
                                                                        
                            
            
                                    
            
            
                | 234 |  |  | 	 * which is ideal for podcasting, playlists, etc. | 
            
                                                                        
                            
            
                                    
            
            
                | 235 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 236 |  |  | 	 * @param string $dir directory to search the cache database for | 
            
                                                                        
                            
            
                                    
            
            
                | 237 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 238 |  |  | 	 * @return array return an array of matching id3 data | 
            
                                                                        
                            
            
                                    
            
            
                | 239 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  | 	public function get_cached_dir($dir) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  | 		$db = $this->db; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  | 		$rows = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  | 		$sql = $this->getQuery('get_cached_dir'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  | 		$stmt = $db->prepare($sql); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  | 		$stmt->bindValue(':dirname', $dir, SQLITE3_TEXT); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  | 		$res = $stmt->execute(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  | 		while ($row=$res->fetchArray()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  | 			$rows[] = unserialize(base64_decode($row)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  | 		return $rows; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 251 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 252 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 253 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 254 |  |  | 	 * returns NULL if query is not found | 
            
                                                                        
                            
            
                                    
            
            
                | 255 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 256 |  |  | 	 * @param string $name | 
            
                                                                        
                            
            
                                    
            
            
                | 257 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 258 |  |  | 	 * @return null|string | 
            
                                                                        
                            
            
                                    
            
            
                | 259 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  | 	public function getQuery($name) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 		switch ($name) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  | 			case 'version_check': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  | 				return "SELECT val FROM $this->table WHERE filename = :filename AND filesize = '-1' AND filetime = '-1' AND analyzetime = '-1'"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 			case 'delete_cache': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 				return "DELETE FROM $this->table"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  | 			case 'set_version': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 				return "INSERT INTO $this->table (filename, dirname, filesize, filetime, analyzetime, val) VALUES (:filename, :dirname, -1, -1, -1, :val)"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  | 			case 'get_id3_data': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  | 				return "SELECT val FROM $this->table WHERE filename = :filename AND filesize = :filesize AND filetime = :filetime"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 			case 'cache_file': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  | 				return "INSERT INTO $this->table (filename, dirname, filesize, filetime, analyzetime, val) VALUES (:filename, :dirname, :filesize, :filetime, :atime, :val)"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 			case 'make_table': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  | 				return "CREATE TABLE IF NOT EXISTS $this->table (filename VARCHAR(255) DEFAULT '', dirname VARCHAR(255) DEFAULT '', filesize INT(11) DEFAULT '0', filetime INT(11) DEFAULT '0', analyzetime INT(11) DEFAULT '0', val text, PRIMARY KEY (filename, filesize, filetime))"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 			case 'get_cached_dir': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 				return "SELECT val FROM $this->table WHERE dirname = :dirname"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 				break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 			default: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 				return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  | 		} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 287 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 288 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 289 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 290 |  |  | 	* use the magical __get() for sql queries | 
            
                                                                        
                            
            
                                    
            
            
                | 291 |  |  | 	* | 
            
                                                                        
                            
            
                                    
            
            
                | 292 |  |  | 	* access as easy as $this->{case name}, returns NULL if query is not found | 
            
                                                                        
                            
            
                                    
            
            
                | 293 |  |  | 	* | 
            
                                                                        
                            
            
                                    
            
            
                | 294 |  |  | 	* @param string $name | 
            
                                                                        
                            
            
                                    
            
            
                | 295 |  |  | 	* | 
            
                                                                        
                            
            
                                    
            
            
                | 296 |  |  | 	* @return string | 
            
                                                                        
                            
            
                                    
            
            
                | 297 |  |  | 	* @deprecated use getQuery() instead | 
            
                                                                        
                            
            
                                    
            
            
                | 298 |  |  | 	*/ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  | 	public function __get($name) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 		return $this->getQuery($name); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 301 |  |  | 	} | 
            
                                                        
            
                                    
            
            
                | 302 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 303 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 304 |  |  |  | 
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.