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<?php |
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namespace Rougin\Describe\Drivers; |
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use PDO; |
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use Rougin\Describe\Column; |
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/** |
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* MySQL Driver |
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* |
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* A database driver extension for MySQL. |
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* |
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* @package Describe |
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* @category Drivers |
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* @author Rougin Royce Gutib <[email protected]> |
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*/ |
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class MySQLDriver implements DriverInterface |
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{ |
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protected $database; |
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protected $columns = []; |
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protected $pdo; |
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/** |
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* @param PDO $pdo |
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* @param string $database |
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*/ |
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public function __construct(PDO $pdo, $database) |
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{ |
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$this->database = $database; |
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$this->pdo = $pdo; |
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} |
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/** |
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* Returns the result. |
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* |
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* @return array |
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*/ |
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public function getTable($table) |
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{ |
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$this->columns = []; |
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$information = $this->pdo->prepare('DESCRIBE ' . $table); |
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$information->execute(); |
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$information->setFetchMode(PDO::FETCH_OBJ); |
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if ($stripped = strpos($table, '.')) { |
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$table = substr($table, $stripped + 1); |
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} |
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while ($row = $information->fetch()) { |
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preg_match('/(.*?)\((.*?)\)/', $row->Type, $match); |
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$column = new Column; |
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if ($row->Extra == 'auto_increment') { |
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$column->setAutoIncrement(true); |
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} |
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if ($row->Null == 'YES') { |
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$column->setNull(true); |
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} |
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switch ($row->Key) { |
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case 'PRI': |
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$column->setPrimary(true); |
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break; |
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case 'MUL': |
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$column->setForeign(true); |
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break; |
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case 'UNI': |
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$column->setUnique(true); |
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break; |
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} |
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$column->setDataType($row->Type); |
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$column->setDefaultValue($row->Default); |
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$column->setField($row->Field); |
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if (isset($match[1])) { |
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$column->setDataType($match[1]); |
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$column->setLength($match[2]); |
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} |
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$query = 'SELECT COLUMN_NAME as "column",' . |
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'REFERENCED_COLUMN_NAME as "referenced_column",' . |
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'CONCAT(' . |
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'REFERENCED_TABLE_SCHEMA, ".",' . |
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'REFERENCED_TABLE_NAME' . |
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') as "referenced_table"' . |
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'FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE ' . |
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'WHERE CONSTRAINT_SCHEMA = "' . $this->database . '" ' . |
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'AND TABLE_NAME = "' . $table . '";'; |
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$foreignTable = $this->pdo->prepare($query); |
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$foreignTable->execute(); |
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$foreignTable->setFetchMode(PDO::FETCH_OBJ); |
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while ($foreignRow = $foreignTable->fetch()) { |
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if ($foreignRow->column == $row->Field) { |
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$column->setReferencedField($foreignRow->referenced_column); |
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$column->setReferencedTable($foreignRow->referenced_table); |
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} |
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} |
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array_push($this->columns, $column); |
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} |
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return $this->columns; |
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} |
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/** |
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* Shows the list of tables. |
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* |
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* @return array |
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*/ |
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public function showTables() |
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{ |
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$tables = []; |
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$information = $this->pdo->prepare('SHOW TABLES'); |
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$information->execute(); |
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while ($row = $information->fetch()) { |
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array_push($tables, $row[0]); |
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} |
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return $tables; |
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} |
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} |
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rougin /
describe
