* @copyright 2007-2013 PrestaShop SA * @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) * International Registered Trademark & Property of PrestaShop SA */ abstract class Db extends DbCore { /** * Add SQL_NO_CACHE in SELECT queries * * @var unknown_type */ public $disableCache = true; /** * Total of queries * * @var int */ public $count = 0; /** * List of queries * * @var array */ public $queries = array(); /** * List of uniq queries (replace numbers by XX) * * @var array */ public $uniqQueries = array(); /** * List of tables * * @var array */ public $tables = array(); /** * Execute the query and log some informations * * @see DbCore::query() */ public function query($sql) { $explain = false; if (preg_match('/^\s*explain\s+/i', $sql)) $explain = true; if (!$explain) { $uniqSql = preg_replace('/[0-9]+/', 'XX', $sql); if (!isset($this->uniqQueries[$uniqSql])) $this->uniqQueries[$uniqSql] = 0; $this->uniqQueries[$uniqSql]++; // No cache for query if ($this->disableCache) $sql = preg_replace('/^\s*select\s+/i', 'SELECT SQL_NO_CACHE ', trim($sql)); // Get tables in quer preg_match_all('/(from|join)\s+`?'._DB_PREFIX_.'([a-z0-9_-]+)/ui', $sql, $matches); foreach ($matches[2] as $table) { if (!isset($this->tables[$table])) $this->tables[$table] = 0; $this->tables[$table]++; } // Execute query $start = microtime(true); } $result = parent::query($sql); if (!$explain) { $end = microtime(true); // Save details $timeSpent = $end - $start; $trace = debug_backtrace(false); while (preg_match('@[/\\\\]classes[/\\\\]db[/\\\\]@i', $trace[0]['file'])) array_shift($trace); $this->queries[] = array( 'query' => $sql, 'time' => $timeSpent, 'file' => $trace[0]['file'], 'line' => $trace[0]['line'], ); } return $result; } }