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<?php |
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require_once(dirname(__FILE__).'/settings.php'); |
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class Connection{ |
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public $db = null; |
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public $dbs = array(); |
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public $latest_schema = 35; |
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public function __construct($dbc = null,$dbname = null,$user = null,$pass = null) { |
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global $globalDBdriver; |
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if ($dbc === null) { |
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if ($this->db === null && $dbname === null) { |
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if ($user === null && $pass === null) { |
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$this->createDBConnection(); |
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} else { |
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$this->createDBConnection(null,$user,$pass); |
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} |
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} else { |
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$this->createDBConnection($dbname); |
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} |
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} elseif ($dbname === null || $dbname === 'default') { |
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$this->db = $dbc; |
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if ($this->connectionExists() === false) { |
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/* |
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echo 'Restart Connection !!!'."\n"; |
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$e = new \Exception; |
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var_dump($e->getTraceAsString()); |
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*/ |
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$this->createDBConnection(); |
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} |
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} else { |
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//$this->connectionExists(); |
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$this->dbs[$dbname] = $dbc; |
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} |
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} |
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public function db() { |
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if ($this->db === null) { |
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$this->__construct(); |
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} |
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if ($this->db === null) { |
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echo 'Can\'t connect to database. Check configuration and database status.'; |
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die; |
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} else { |
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return $this->db; |
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} |
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} |
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/** |
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* Creates the database connection |
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* |
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* @return Boolean of the database connection |
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* |
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*/ |
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public function createDBConnection($DBname = null, $user = null, $pass = null) |
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{ |
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global $globalDBdriver, $globalDBhost, $globalDBuser, $globalDBpass, $globalDBname, $globalDebug, $globalDB, $globalDBport, $globalDBTimeOut, $globalDBretry, $globalDBPersistent; |
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if ($DBname === null) { |
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if ($user === null && $pass === null) { |
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$DBname = 'default'; |
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$globalDBSdriver = $globalDBdriver; |
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$globalDBShost = $globalDBhost; |
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$globalDBSname = $globalDBname; |
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$globalDBSuser = $globalDBuser; |
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$globalDBSpass = $globalDBpass; |
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if (!isset($globalDBport) || $globalDBport === NULL || $globalDBport == '') $globalDBSport = 3306; |
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else $globalDBSport = $globalDBport; |
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} else { |
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$DBname = 'default'; |
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$globalDBSdriver = $globalDBdriver; |
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$globalDBShost = $globalDBhost; |
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$globalDBSname = $globalDBname; |
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$globalDBSuser = $user; |
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$globalDBSpass = $pass; |
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if (!isset($globalDBport) || $globalDBport === NULL || $globalDBport == '') $globalDBSport = 3306; |
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else $globalDBSport = $globalDBport; |
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} |
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} else { |
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$globalDBSdriver = $globalDB[$DBname]['driver']; |
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$globalDBShost = $globalDB[$DBname]['host']; |
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$globalDBSname = $globalDB[$DBname]['name']; |
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$globalDBSuser = $globalDB[$DBname]['user']; |
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$globalDBSpass = $globalDB[$DBname]['pass']; |
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if (isset($globalDB[$DBname]['port'])) $globalDBSport = $globalDB[$DBname]['port']; |
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else $globalDBSport = 3306; |
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} |
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// Set number of try to connect to DB |
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if (!isset($globalDBretry) || $globalDBretry == '' || $globalDBretry === NULL) $globalDBretry = 5; |
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$i = 0; |
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while (true) { |
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try { |
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if ($globalDBSdriver == 'mysql') { |
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$this->dbs[$DBname] = new PDO("$globalDBSdriver:host=$globalDBShost;port=$globalDBSport;dbname=$globalDBSname;charset=utf8", $globalDBSuser, $globalDBSpass); |
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$this->dbs[$DBname]->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAMES 'utf8'"); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_CASE,PDO::CASE_LOWER); |
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if (!isset($globalDBTimeOut)) $this->dbs[$DBname]->setAttribute(PDO::ATTR_TIMEOUT,500); |
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else $this->dbs[$DBname]->setAttribute(PDO::ATTR_TIMEOUT,$globalDBTimeOut); |
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if (!isset($globalDBPersistent)) $this->dbs[$DBname]->setAttribute(PDO::ATTR_PERSISTENT,true); |
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else $this->dbs[$DBname]->setAttribute(PDO::ATTR_PERSISTENT,$globalDBPersistent); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_EMULATE_PREPARES, true); |
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$this->dbs[$DBname]->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true); |
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// Workaround against "ONLY_FULL_GROUP_BY" mode |
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// to enable it : $this->dbs[$DBname]->exec('SET sql_mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,ONLY_FULL_GROUP_BY"'); |
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$this->dbs[$DBname]->exec('SET sql_mode = "NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"'); |
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// Force usage of UTC |
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$this->dbs[$DBname]->exec('SET SESSION time_zone = "+00:00"'); |
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//$this->dbs[$DBname]->exec('SET @@session.time_zone = "+00:00"'); |
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} else { |
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$this->dbs[$DBname] = new PDO("$globalDBSdriver:host=$globalDBShost;port=$globalDBSport;dbname=$globalDBSname;options='--client_encoding=utf8'", $globalDBSuser, $globalDBSpass); |
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//$this->dbs[$DBname]->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAMES 'utf8'"); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_CASE,PDO::CASE_LOWER); |
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if (!isset($globalDBTimeOut)) $this->dbs[$DBname]->setAttribute(PDO::ATTR_TIMEOUT,200); |
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else $this->dbs[$DBname]->setAttribute(PDO::ATTR_TIMEOUT,$globalDBTimeOut); |
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if (!isset($globalDBPersistent)) $this->dbs[$DBname]->setAttribute(PDO::ATTR_PERSISTENT,true); |
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else $this->dbs[$DBname]->setAttribute(PDO::ATTR_PERSISTENT,$globalDBPersistent); |
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$this->dbs[$DBname]->setAttribute(PDO::ATTR_EMULATE_PREPARES, true); |
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$this->dbs[$DBname]->exec('SET timezone="UTC"'); |
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} |
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break; |
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} catch(PDOException $e) { |
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$i++; |
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if (isset($globalDebug) && $globalDebug) echo 'Error connecting to DB: '.$globalDBSname.' - Error: '.$e->getMessage()."\n"; |
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//exit; |
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if ($i > $globalDBretry) return false; |
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//return false; |
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} |
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} |
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if ($DBname === 'default') $this->db = $this->dbs['default']; |
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return true; |
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} |
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public function tableExists($table) |
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{ |
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global $globalDBdriver, $globalDBname; |
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if ($globalDBdriver == 'mysql') { |
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$query = "SHOW TABLES LIKE '".$table."'"; |
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} else { |
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$query = "SELECT * FROM pg_catalog.pg_tables WHERE tablename = '".$table."'"; |
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} |
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if ($this->db == NULL) return false; |
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try { |
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//$Connection = new Connection(); |
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$results = $this->db->query($query); |
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} catch(PDOException $e) { |
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return false; |
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} |
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if($results->rowCount()>0) { |
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return true; |
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} |
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else return false; |
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} |
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public function connectionExists() |
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{ |
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global $globalDBdriver, $globalDBCheckConnection; |
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if (isset($globalDBCheckConnection) && $globalDBCheckConnection === FALSE) return true; |
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$query = "SELECT 1 + 1"; |
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if ($this->db === null) return false; |
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try { |
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$sum = @$this->db->query($query); |
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if ($sum instanceof \PDOStatement) { |
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$sum = $sum->fetchColumn(0); |
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} else $sum = 0; |
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if (intval($sum) !== 2) { |
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return false; |
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} |
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} catch(PDOException $e) { |
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if($e->getCode() != 'HY000' || !stristr($e->getMessage(), 'server has gone away')) { |
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throw $e; |
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} |
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//echo 'error ! '.$e->getMessage(); |
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return false; |
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} |
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return true; |
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} |
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/* |
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* Check if index exist |
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*/ |
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public function indexExists($table,$index) |
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{ |
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global $globalDBdriver, $globalDBname; |
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if ($globalDBdriver == 'mysql') { |
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$query = "SELECT COUNT(*) as nb FROM INFORMATION_SCHEMA.STATISTICS WHERE table_schema=DATABASE() AND table_name='".$table."' AND index_name='".$index."'"; |
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} else { |
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$query = "SELECT count(*) as nb FROM pg_class c JOIN pg_namespace n ON n.oid = c.relnamespace WHERE c.relname = '".$index."' AND n.nspname = '".$table."'"; |
191
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} |
192
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try { |
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//$Connection = new Connection(); |
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$results = $this->db->query($query); |
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195
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} catch(PDOException $e) { |
196
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return false; |
197
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} |
198
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$nb = $results->fetchAll(PDO::FETCH_ASSOC); |
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if($nb[0]['nb'] > 0) { |
200
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return true; |
201
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} |
202
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else return false; |
203
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} |
204
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205
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/* |
206
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* Get columns name of a table |
207
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* @return Array all column name in table |
208
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*/ |
209
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public function getColumnName($table) |
210
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{ |
211
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$query = "SELECT * FROM ".$table." LIMIT 0"; |
212
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try { |
213
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$results = $this->db->query($query); |
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214
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} catch(PDOException $e) { |
215
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return "error : ".$e->getMessage()."\n"; |
216
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} |
217
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$columns = array(); |
218
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$colcnt = $results->columnCount(); |
219
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for ($i = 0; $i < $colcnt; $i++) { |
220
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$col = $results->getColumnMeta($i); |
221
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$columns[] = $col['name']; |
222
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} |
223
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return $columns; |
224
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} |
225
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226
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public function getColumnType($table,$column) { |
227
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$select = $this->db->query('SELECT '.$column.' FROM '.$table); |
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228
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$tomet = $select->getColumnMeta(0); |
229
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return $tomet['native_type']; |
230
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} |
231
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232
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/* |
233
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* Check if a column name exist in a table |
234
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* @return Boolean column exist or not |
235
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*/ |
236
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public function checkColumnName($table,$name) |
237
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{ |
238
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global $globalDBdriver, $globalDBname; |
239
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if ($globalDBdriver == 'mysql') { |
240
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$query = "SELECT COUNT(*) as nb FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = :database AND TABLE_NAME = :table AND COLUMN_NAME = :name LIMIT 1"; |
241
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} else { |
242
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$query = "SELECT COUNT(*) as nb FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_CATALOG = :database AND TABLE_NAME = :table AND COLUMN_NAME = :name LIMIT 1"; |
243
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} |
244
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try { |
245
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$sth = $this->db()->prepare($query); |
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246
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$sth->execute(array(':database' => $globalDBname,':table' => $table,':name' => $name)); |
247
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} catch(PDOException $e) { |
248
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echo "error : ".$e->getMessage()."\n"; |
249
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} |
250
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$result = $sth->fetch(PDO::FETCH_ASSOC); |
251
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$sth->closeCursor(); |
252
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if ($result['nb'] > 0) return true; |
253
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else return false; |
254
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/* } else { |
255
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$query = "SELECT * FROM ".$table." LIMIT 0"; |
256
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try { |
257
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$results = $this->db->query($query); |
258
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} catch(PDOException $e) { |
259
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return "error : ".$e->getMessage()."\n"; |
260
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} |
261
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$colcnt = $results->columnCount(); |
262
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for ($i = 0; $i < $colcnt; $i++) { |
263
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$col = $results->getColumnMeta($i); |
264
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if ($name == $col['name']) return true; |
265
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} |
266
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return false; |
267
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} |
268
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*/ |
269
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} |
270
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|
271
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/* |
272
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* Get schema version |
273
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* @return integer schema version |
274
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*/ |
275
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public function check_schema_version() { |
276
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$version = 0; |
277
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if ($this->tableExists('aircraft')) { |
278
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if (!$this->tableExists('config')) { |
279
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$version = '1'; |
280
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return $version; |
281
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} else { |
282
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$query = "SELECT value FROM config WHERE name = 'schema_version' LIMIT 1"; |
283
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try { |
284
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$sth = $this->db->prepare($query); |
285
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$sth->execute(); |
286
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} catch(PDOException $e) { |
287
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return "error : ".$e->getMessage()."\n"; |
288
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} |
289
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$result = $sth->fetch(PDO::FETCH_ASSOC); |
290
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$sth->closeCursor(); |
291
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return $result['value']; |
292
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} |
293
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|
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} else return $version; |
294
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} |
295
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|
296
|
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/* |
297
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|
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* Check if schema version is latest_schema |
298
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* @return Boolean if latest version or not |
299
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*/ |
300
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public function latest() { |
301
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if ($this->check_schema_version() == $this->latest_schema) return true; |
302
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else return false; |
303
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} |
304
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|
305
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} |
306
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?> |
307
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Methods can only be called on objects. This check looks for methods being called on variables that have been inferred to never be objects.