* @copyright 2007-2016 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 bool
*/
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', $sql) || strpos($sql, _DB_PREFIX_.'modules_perfs')) {
$explain = true;
}
if (!$explain) {
$uniqSql = preg_replace('/[\'"][a-f0-9]{32}[\'"]/', 'XX', $sql);
$uniqSql = preg_replace('/[0-9]+/', 'XX', $uniqSql);
if (!isset($this->uniqQueries[$uniqSql])) {
$this->uniqQueries[$uniqSql] = 0;
}
$this->uniqQueries[$uniqSql]++;
// No cache for query
if ($this->disableCache && !stripos($sql, 'SQL_NO_CACHE')) {
$sql = preg_replace('/^\s*select\s+/i', 'SELECT SQL_NO_CACHE ', trim($sql));
}
// Get tables in query
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]++;
}
$start = microtime(true);
}
// Execute query
$result = parent::query($sql);
if (!$explain) {
$end = microtime(true);
$stack = debug_backtrace(false);
while (preg_match('@[/\\\\]classes[/\\\\]db[/\\\\]@i', $stack[0]['file'])) {
array_shift($stack);
}
$stack_light = array();
foreach ($stack as $call) {
$stack_light[] = array('file' => isset($call['file']) ? $call['file'] : 'undefined', 'line' => isset($call['line']) ? $call['line'] : 'undefined');
}
$this->queries[] = array(
'query' => $sql,
'time' => $end - $start,
'stack' => $stack_light
);
}
return $result;
}
}