o2system /
database
| Total Complexity | 80 |
| Total Lines | 631 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 1 | Features | 0 |
Complex classes like Connection often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Connection, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 29 | class Connection extends AbstractConnection |
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| 30 | {
|
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| 31 | /** |
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| 32 | * Connection::$isDeleteHack |
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| 33 | * |
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| 34 | * DELETE hack flag |
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| 35 | * |
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| 36 | * Whether to use the MySql "delete hack" which allows the number |
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| 37 | * of affected rows to be shown. Uses a preg_replace when enabled, |
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| 38 | * adding a bit more processing to all queries. |
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| 39 | * |
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| 40 | * @var bool |
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| 41 | */ |
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| 42 | public $isDeleteHack = true; |
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| 43 | |||
| 44 | /** |
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| 45 | * Connection::$platform |
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| 46 | * |
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| 47 | * Database driver platform name. |
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| 48 | * |
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| 49 | * @var string |
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| 50 | */ |
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| 51 | protected $platform = 'MySQL'; |
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| 52 | |||
| 53 | /** |
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| 54 | * Connection::$config |
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| 55 | * |
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| 56 | * Connection configurations. |
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| 57 | * |
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| 58 | * @var array |
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| 59 | */ |
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| 60 | protected $config |
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| 61 | = [ |
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| 62 | 'escapeCharacter' => '`', |
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| 63 | 'reservedIdentifiers' => ['*'], |
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| 64 | 'likeEscapeStatement' => ' ESCAPE \'%s\' ', |
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| 65 | 'likeEscapeCharacter' => '!', |
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| 66 | ]; |
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| 67 | |||
| 68 | /** |
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| 69 | * Connection::$handle |
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| 70 | * |
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| 71 | * MySqli Connection Instance. |
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| 72 | * |
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| 73 | * @var \mysqli |
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| 74 | */ |
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| 75 | protected $handle; |
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| 76 | |||
| 77 | // ------------------------------------------------------------------------ |
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| 78 | |||
| 79 | /** |
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| 80 | * Connection::isSupported |
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| 81 | * |
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| 82 | * Check if the platform is supported. |
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| 83 | * |
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| 84 | * @return bool |
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| 85 | */ |
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| 86 | public function isSupported() |
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| 87 | {
|
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| 88 | return extension_loaded('mysqli');
|
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| 89 | } |
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| 90 | |||
| 91 | // ------------------------------------------------------------------------ |
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| 92 | |||
| 93 | /** |
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| 94 | * Connection::setDatabase |
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| 95 | * |
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| 96 | * Set a specific database table to use. |
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| 97 | * |
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| 98 | * @param string $database Database name. |
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| 99 | * |
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| 100 | * @return static |
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| 101 | */ |
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| 102 | public function setDatabase($database) |
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| 103 | {
|
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| 104 | $database = empty($database) |
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| 105 | ? $this->database |
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| 106 | : $database; |
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| 107 | |||
| 108 | if ($this->handle->select_db($database)) {
|
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| 109 | $this->database = $database; |
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| 110 | } |
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| 111 | |||
| 112 | return $this; |
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| 113 | } |
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| 114 | |||
| 115 | // ------------------------------------------------------------------------ |
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| 116 | |||
| 117 | /** |
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| 118 | * Connection::getDatabases |
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| 119 | * |
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| 120 | * Get list of current connection databases. |
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| 121 | * |
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| 122 | * @return array Returns an array. |
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| 123 | * @throws \O2System\Spl\Exceptions\RuntimeException |
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| 124 | * @throws \Psr\Cache\InvalidArgumentException |
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| 125 | */ |
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| 126 | public function getDatabases() |
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| 127 | {
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| 128 | if (empty($this->queriesResultCache[ 'databaseNames' ])) {
|
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| 129 | $result = $this->query('SHOW DATABASES');
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| 130 | |||
| 131 | if ($result->count()) {
|
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| 132 | foreach ($result as $row) {
|
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| 133 | |||
| 134 | if ( ! isset($key)) {
|
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| 135 | if (isset($row[ 'database' ])) {
|
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| 136 | $key = 'database'; |
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| 137 | } elseif (isset($row[ 'Database' ])) {
|
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| 138 | $key = 'Database'; |
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| 139 | } elseif (isset($row[ 'DATABASE' ])) {
|
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| 140 | $key = 'DATABASE'; |
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| 141 | } else {
|
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| 142 | /* We have no other choice but to just get the first element's key. |
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| 143 | * Due to array_shift() accepting its argument by reference, if |
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| 144 | * E_STRICT is on, this would trigger a warning. So we'll have to |
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| 145 | * assign it first. |
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| 146 | */ |
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| 147 | $key = array_keys($row); |
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| 148 | $key = array_shift($key); |
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| 149 | } |
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| 150 | } |
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| 151 | |||
| 152 | $this->queriesResultCache[ 'databaseNames' ][] = $row->offsetGet($key); |
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| 153 | } |
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| 154 | } |
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| 155 | } |
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| 156 | |||
| 157 | return $this->queriesResultCache[ 'databaseNames' ]; |
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| 158 | } |
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| 159 | |||
| 160 | // ------------------------------------------------------------------------ |
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| 161 | |||
| 162 | /** |
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| 163 | * Connection::getTables |
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| 164 | * |
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| 165 | * Get list of current database tables. |
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| 166 | * |
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| 167 | * @param bool $prefixLimit If sets TRUE the query will be limit using database table prefix. |
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| 168 | * |
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| 169 | * @return array Returns an array |
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| 170 | * @throws \O2System\Spl\Exceptions\RuntimeException |
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| 171 | * @throws \Psr\Cache\InvalidArgumentException |
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| 172 | */ |
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| 173 | public function getTables($prefixLimit = false) |
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| 210 | } |
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| 211 | |||
| 212 | // ------------------------------------------------------------------------ |
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| 213 | |||
| 214 | /** |
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| 215 | * Connection::getColumns |
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| 216 | * |
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| 217 | * @param string $table The database table name. |
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| 218 | * |
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| 219 | * @return array |
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| 220 | * @throws \O2System\Spl\Exceptions\RuntimeException |
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| 221 | * @throws \Psr\Cache\InvalidArgumentException |
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| 222 | */ |
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| 223 | public function getColumns($table) |
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| 224 | {
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| 225 | $table = $this->prefixTable($table); |
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| 226 | |||
| 227 | if (empty($this->queriesResultCache[ 'tableColumns' ][ $table ])) {
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| 228 | $result = $this->query('SHOW COLUMNS FROM ' . $this->protectIdentifiers($table, true, null, false));
|
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| 229 | |||
| 230 | if ($result->count()) {
|
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| 231 | foreach ($result as $row) {
|
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| 232 | // Do we know from where to get the column's name? |
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| 233 | if ( ! isset($key)) {
|
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| 234 | if (isset($row[ 'column_name' ])) {
|
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| 235 | $key = 'column_name'; |
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| 236 | } elseif (isset($row[ 'COLUMN_NAME' ])) {
|
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| 237 | $key = 'COLUMN_NAME'; |
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| 238 | } else {
|
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| 239 | /* We have no other choice but to just get the first element's key. |
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| 240 | * Due to array_shift() accepting its argument by reference, if |
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| 241 | * E_STRICT is on, this would trigger a warning. So we'll have to |
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| 242 | * assign it first. |
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| 243 | */ |
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| 244 | $key = array_keys($row->getArrayCopy()); |
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| 245 | $key = array_shift($key); |
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| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | $this->queriesResultCache[ 'tableColumns' ][ $table ][ $row->offsetGet($key) ] = $row; |
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| 250 | } |
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| 251 | } |
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| 252 | } |
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| 253 | |||
| 254 | return $this->queriesResultCache[ 'tableColumns' ][ $table ]; |
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| 255 | } |
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| 256 | |||
| 257 | // ------------------------------------------------------------------------ |
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| 258 | |||
| 259 | /** |
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| 260 | * Connection::reconnect |
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| 261 | * |
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| 262 | * Keep or establish the connection if no queries have been sent for |
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| 263 | * a length of time exceeding the server's idle timeout. |
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| 264 | * |
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| 265 | * @return void |
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| 266 | */ |
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| 267 | public function reconnect() |
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| 268 | {
|
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| 269 | if ($this->handle !== false && $this->handle->ping() === false) {
|
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| 270 | $this->handle = false; |
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| 271 | } |
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| 272 | } |
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| 273 | |||
| 274 | // ------------------------------------------------------------------------ |
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| 275 | |||
| 276 | /** |
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| 277 | * Connection::getAffectedRows |
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| 278 | * |
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| 279 | * Get the total number of affected rows from the last query execution. |
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| 280 | * |
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| 281 | * @return int Returns total number of affected rows |
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| 282 | */ |
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| 283 | public function getAffectedRows() |
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| 284 | {
|
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| 285 | return $this->handle->affected_rows; |
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| 286 | } |
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| 287 | |||
| 288 | //-------------------------------------------------------------------- |
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| 289 | |||
| 290 | /** |
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| 291 | * Connection::getLastInsertId |
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| 292 | * |
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| 293 | * Get last insert id from the last insert query execution. |
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| 294 | * |
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| 295 | * @return int Returns total number of affected rows |
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| 296 | */ |
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| 297 | public function getLastInsertId() |
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| 298 | {
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| 299 | return $this->handle->insert_id; |
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| 300 | } |
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| 301 | |||
| 302 | // ------------------------------------------------------------------------ |
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| 303 | |||
| 304 | /** |
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| 305 | * Connection::getLastQuery |
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| 306 | * |
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| 307 | * Returns the last query's statement object. |
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| 308 | * |
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| 309 | * @return string |
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| 310 | */ |
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| 311 | public function getLastQuery() |
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| 312 | {
|
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| 313 | $last = end($this->queriesCache); |
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| 314 | |||
| 315 | if ($last->getSqlStatement() === 'SELECT FOUND_ROWS() AS numrows;') {
|
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| 316 | $last = prev($this->queriesCache); |
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| 317 | } |
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| 318 | |||
| 319 | return $last; |
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| 320 | } |
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| 321 | |||
| 322 | //-------------------------------------------------------------------- |
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| 323 | |||
| 324 | /** |
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| 325 | * Connection::platformGetPlatformVersionHandler |
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| 326 | * |
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| 327 | * Platform getting version handler. |
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| 328 | * |
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| 329 | * @return SplArrayObject |
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| 330 | */ |
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| 331 | protected function platformGetPlatformInfoHandler() |
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| 332 | {
|
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| 333 | $server[ 'version' ][ 'string' ] = $this->handle->server_info; |
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| 334 | $server[ 'version' ][ 'number' ] = $this->handle->server_version; |
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| 335 | $server[ 'stats' ] = $this->handle->get_connection_stats(); |
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| 336 | |||
| 337 | $client[ 'version' ][ 'string' ] = $this->handle->client_info; |
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| 338 | $client[ 'version' ][ 'number' ] = $this->handle->client_version; |
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| 339 | $client[ 'stats' ] = mysqli_get_client_stats(); |
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| 340 | |||
| 341 | return new SplArrayObject([ |
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| 342 | 'name' => $this->getPlatform(), |
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| 343 | 'host' => $this->handle->host_info, |
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| 344 | 'state' => $this->handle->sqlstate, |
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| 345 | 'protocol' => $this->handle->protocol_version, |
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| 346 | 'server' => $server, |
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| 347 | 'client' => $client, |
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| 348 | ]); |
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| 349 | } |
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| 350 | |||
| 351 | // ------------------------------------------------------------------------ |
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| 352 | |||
| 353 | /** |
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| 354 | * Connection::platformConnectHandler |
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| 355 | * |
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| 356 | * Establish the connection. |
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| 357 | * |
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| 358 | * @param Config $config |
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| 359 | * |
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| 360 | * @return void |
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| 361 | * @throws RuntimeException |
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| 362 | */ |
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| 363 | protected function platformConnectHandler(Config $config) |
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| 364 | {
|
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| 365 | // Do we have a socket path? |
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| 366 | if ($config->hostname[ 0 ] === '/') {
|
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| 367 | $hostname = null; |
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| 368 | $port = null; |
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| 369 | $socket = $config->hostname; |
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| 370 | } else {
|
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| 371 | $hostname = ($config->persistent === true) |
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| 372 | ? 'p:' . $config->hostname |
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| 373 | : $config->hostname; |
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| 374 | $port = empty($config->port) |
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| 375 | ? null |
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| 376 | : $config->port; |
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| 377 | $socket = null; |
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| 378 | } |
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| 379 | |||
| 380 | $flags = ($config->compress === true) |
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| 381 | ? MYSQLI_CLIENT_COMPRESS |
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| 382 | : 0; |
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| 383 | $this->handle = mysqli_init(); |
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| 384 | //$this->handle->autocommit( ( $this->transactionEnable ? true : false ) ); |
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| 385 | |||
| 386 | $this->handle->options(MYSQLI_OPT_CONNECT_TIMEOUT, 10); |
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| 387 | |||
| 388 | if (isset($config->strictOn)) {
|
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| 389 | if ($config->strictOn) {
|
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| 390 | $this->handle->options( |
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| 391 | MYSQLI_INIT_COMMAND, |
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| 392 | 'SET SESSION Sql_mode = CONCAT(@@Sql_mode, ",", "STRICT_ALL_TABLES")' |
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| 393 | ); |
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| 394 | } else {
|
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| 395 | $this->handle->options( |
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| 396 | MYSQLI_INIT_COMMAND, |
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| 397 | 'SET SESSION Sql_mode = |
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| 398 | REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE( |
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| 399 | @@Sql_mode, |
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| 400 | "STRICT_ALL_TABLES,", ""), |
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| 401 | ",STRICT_ALL_TABLES", ""), |
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| 402 | "STRICT_ALL_TABLES", ""), |
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| 403 | "STRICT_TRANS_TABLES,", ""), |
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| 404 | ",STRICT_TRANS_TABLES", ""), |
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| 405 | "STRICT_TRANS_TABLES", "")' |
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| 406 | ); |
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| 407 | } |
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| 408 | } |
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| 409 | |||
| 410 | if (is_array($config->encrypt)) {
|
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| 411 | $ssl = []; |
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| 412 | empty($config->encrypt[ 'ssl_key' ]) OR $ssl[ 'key' ] = $config->encrypt[ 'ssl_key' ]; |
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| 413 | empty($config->encrypt[ 'ssl_cert' ]) OR $ssl[ 'cert' ] = $config->encrypt[ 'ssl_cert' ]; |
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| 414 | empty($config->encrypt[ 'ssl_ca' ]) OR $ssl[ 'ca' ] = $config->encrypt[ 'ssl_ca' ]; |
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| 415 | empty($config->encrypt[ 'ssl_capath' ]) OR $ssl[ 'capath' ] = $config->encrypt[ 'ssl_capath' ]; |
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| 416 | empty($config->encrypt[ 'ssl_cipher' ]) OR $ssl[ 'cipher' ] = $config->encrypt[ 'ssl_cipher' ]; |
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| 417 | |||
| 418 | if ( ! empty($ssl)) {
|
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| 419 | if (isset($config->encrypt[ 'ssl_verify' ])) {
|
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| 420 | if ($config->encrypt[ 'ssl_verify' ]) {
|
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| 421 | defined('MYSQLI_OPT_SSL_VERIFY_SERVER_CERT')
|
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| 422 | && $this->handle->options(MYSQLI_OPT_SSL_VERIFY_SERVER_CERT, true); |
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| 423 | } |
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| 424 | // Apparently (when it exists), setting MYSQLI_OPT_SSL_VERIFY_SERVER_CERT |
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| 425 | // to FALSE didn't do anything, so PHP 5.6.16 introduced yet another |
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| 426 | // constant ... |
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| 427 | // |
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| 428 | // https://secure.php.net/ChangeLog-5.php#5.6.16 |
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| 429 | // https://bugs.php.net/bug.php?id=68344 |
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| 430 | elseif (defined('MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT')) {
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| 431 | $this->handle->options(MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT, true); |
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| 432 | } |
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| 433 | } |
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| 434 | |||
| 435 | $flags |= MYSQLI_CLIENT_SSL; |
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| 436 | $this->handle->ssl_set( |
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| 437 | isset($ssl[ 'key' ]) |
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| 438 | ? $ssl[ 'key' ] |
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| 439 | : null, |
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| 440 | isset($ssl[ 'cert' ]) |
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| 441 | ? $ssl[ 'cert' ] |
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| 442 | : null, |
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| 443 | isset($ssl[ 'ca' ]) |
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| 444 | ? $ssl[ 'ca' ] |
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| 445 | : null, |
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| 446 | isset($ssl[ 'capath' ]) |
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| 447 | ? $ssl[ 'capath' ] |
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| 448 | : null, |
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| 449 | isset($ssl[ 'cipher' ]) |
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| 450 | ? $ssl[ 'cipher' ] |
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| 451 | : null |
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| 452 | ); |
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| 453 | } |
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| 454 | } |
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| 455 | |||
| 456 | if ($this->handle->real_connect( |
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| 457 | $hostname, |
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| 458 | $config->username, |
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| 459 | $config->password, |
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| 460 | $config->database, |
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| 461 | $port, |
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| 462 | $socket, |
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| 463 | $flags |
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| 464 | ) |
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| 465 | ) {
|
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| 466 | // Prior to version 5.7.3, MySql silently downgrades to an unencrypted connection if SSL setup fails |
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| 467 | if ( |
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| 468 | ($flags & MYSQLI_CLIENT_SSL) |
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| 469 | AND version_compare($this->handle->client_info, '5.7.3', '<=') |
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| 470 | AND empty($this->handle->query("SHOW STATUS LIKE 'ssl_cipher'")
|
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| 471 | ->fetch_object()->Value) |
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| 472 | ) {
|
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| 473 | $this->handle->close(); |
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| 474 | // 'MySqli was configured for an SSL connection, but got an unencrypted connection instead!'; |
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| 475 | logger()->error('E_DB_CONNECTION_SSL', [$this->platform]);
|
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| 476 | |||
| 477 | if ($config->debugEnable) {
|
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| 478 | throw new RuntimeException('E_DB_CONNECTION_SSL');
|
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| 479 | } |
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| 480 | |||
| 481 | return; |
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| 482 | } |
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| 483 | |||
| 484 | if ( ! $this->handle->set_charset($config->charset)) {
|
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| 485 | // "Database: Unable to set the configured connection charset ('{$this->charset}')."
|
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| 486 | logger()->error('E_DB_CONNECTION_CHARSET', [$config->charset]);
|
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| 487 | $this->handle->close(); |
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| 488 | |||
| 489 | if ($config->debugEnable) {
|
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| 490 | // 'Unable to set client connection character set: ' . $this->charset |
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| 491 | throw new RuntimeException('E_DB_CONNECTION_CHARSET', [$config->charset]);
|
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| 492 | } |
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| 493 | } |
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| 494 | } |
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| 495 | } |
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| 496 | |||
| 497 | // ------------------------------------------------------------------------ |
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| 498 | |||
| 499 | /** |
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| 500 | * Connection::disconnectHandler |
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| 501 | * |
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| 502 | * Driver dependent way method for closing the connection. |
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| 503 | * |
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| 504 | * @return mixed |
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| 505 | */ |
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| 506 | protected function platformDisconnectHandler() |
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| 507 | {
|
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| 508 | $this->handle->close(); |
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| 509 | } |
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| 510 | |||
| 511 | // ------------------------------------------------------------------------ |
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| 512 | |||
| 513 | /** |
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| 514 | * Connection::executeHandler |
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| 515 | * |
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| 516 | * Driver dependent way method for execute the Sql statement. |
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| 517 | * |
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| 518 | * @param Query\Statement $statement Query object. |
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| 519 | * |
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| 520 | * @return bool |
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| 521 | */ |
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| 522 | protected function platformExecuteHandler(Query\Statement &$statement) |
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| 523 | {
|
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| 524 | if (false !== $this->handle->query($statement->getSqlFinalStatement())) {
|
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| 525 | return true; |
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| 526 | } |
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| 527 | |||
| 528 | // Set query error information |
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| 529 | $statement->addError($this->handle->errno, $this->handle->error); |
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| 530 | |||
| 531 | return false; |
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| 532 | |||
| 533 | } |
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| 534 | |||
| 535 | // ------------------------------------------------------------------------ |
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| 536 | |||
| 537 | /** |
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| 538 | * Connection::platformQueryHandler |
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| 539 | * |
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| 540 | * Driver dependent way method for execute the Sql statement. |
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| 541 | * |
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| 542 | * @param Query\Statement $statement Query object. |
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| 543 | * |
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| 544 | * @return array |
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| 545 | */ |
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| 546 | protected function platformQueryHandler(Query\Statement &$statement) |
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| 557 | } |
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| 558 | |||
| 559 | //-------------------------------------------------------------------- |
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| 560 | |||
| 561 | /** |
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| 562 | * Connection::platformTransactionBeginHandler |
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| 563 | * |
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| 564 | * Platform beginning a transaction handler. |
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| 565 | * |
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| 566 | * @return bool |
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| 567 | */ |
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| 568 | protected function platformTransactionBeginHandler() |
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| 569 | {
|
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| 570 | if ($this->transactionInProgress === false) {
|
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| 571 | // Begin transaction using autocommit function set to false |
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| 572 | $this->handle->autocommit(false); |
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| 573 | |||
| 574 | // Flag for there is a transaction progress |
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| 575 | $this->transactionInProgress = true; |
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| 576 | |||
| 577 | // Flag for error checking |
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| 578 | $this->transactionStatus = true; |
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| 579 | } |
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| 580 | |||
| 581 | |||
| 582 | return $this->transactionInProgress; |
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| 583 | } |
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| 584 | |||
| 585 | // ------------------------------------------------------------------------ |
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| 586 | |||
| 587 | /** |
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| 588 | * Connection::platformTransactionCommitHandler |
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| 589 | * |
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| 590 | * Platform committing a transaction handler. |
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| 591 | * |
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| 592 | * @return bool |
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| 593 | */ |
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| 594 | protected function platformTransactionCommitHandler() |
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| 595 | {
|
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| 596 | if ($this->transactionStatus === true) {
|
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| 597 | $this->handle->commit(); |
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| 598 | $this->handle->autocommit(true); |
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| 599 | $this->transactionInProgress = false; |
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| 600 | |||
| 601 | return true; |
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| 602 | } |
||
| 603 | |||
| 604 | return false; |
||
| 605 | } |
||
| 606 | |||
| 607 | // ------------------------------------------------------------------------ |
||
| 608 | |||
| 609 | /** |
||
| 610 | * Connection::platformTransactionRollBackHandler |
||
| 611 | * |
||
| 612 | * Platform rolling back a transaction handler. |
||
| 613 | * |
||
| 614 | * @return void |
||
| 615 | */ |
||
| 616 | protected function platformTransactionRollBackHandler() |
||
| 621 | } |
||
| 622 | |||
| 623 | // ------------------------------------------------------------------------ |
||
| 624 | |||
| 625 | /** |
||
| 626 | * Connection::prepareSqlStatement |
||
| 627 | * |
||
| 628 | * Platform preparing a Sql statement. |
||
| 629 | * |
||
| 630 | * @param string $sqlStatement Sql Statement to be prepared. |
||
| 631 | * @param array $options Preparing Sql statement options. |
||
| 632 | * |
||
| 633 | * @return string |
||
| 634 | */ |
||
| 635 | protected function platformPrepareSqlStatement($sqlStatement, array $options = []) |
||
| 644 | } |
||
| 645 | |||
| 646 | // ------------------------------------------------------------------------ |
||
| 647 | |||
| 648 | /** |
||
| 649 | * Connection::platformEscapeStringHandler |
||
| 650 | * |
||
| 651 | * Platform escape string handler. |
||
| 652 | * |
||
| 653 | * @param string $string |
||
| 654 | * |
||
| 655 | * @return string |
||
| 656 | */ |
||
| 657 | protected function platformEscapeStringHandler($string) |
||
| 660 | } |
||
| 661 | } |
||
| 662 |
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