Bug #65583 [Opn->Nab]: PDO MySQL driver does not escape properly backslashes

Edit report at https://bugs.php.net/bug.php?id=65583&edit=1 ID: 65583 Updated by: johannes@php.net Reported by: kevin at les-tilleuls dot coop Summary: PDO MySQL driver does not escape properly backslashes -Status: Open +Status: Not a bug Type: Bug Package: PDO related Operating System: Mac OS X PHP Version: 5.5.3 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Your issue is that for LIKE the \ is a special character. If you use $stmt = $dbh->prepare('SELECT test FROM test WHERE test = :data'); all works. See also http://dev.mysql.com/doc/refman/5.6/en/string-comparison-functions.html#operator_like Previous Comments: ------------------------------------------------------------------------ [2013-08-29 13:10:55] kevin at les-tilleuls dot coop Description: ------------ PDO MySQL driver does not escape backslashes in string. The MySQL doc indicates that backslashes must be doubled to be escaped http://dev.mysql.com/doc/refman/5.6/en/string-literals.html The driver does not do that. See the script above. Should this escaping be done by PDO or a higher layer like Doctrine DBAL? Test script: --------------- <?php define('DSN', 'mysql:dbname=testdb;host=127.0.0.1'); define('USER', 'root'); define('PASSWORD', ''); /* DATABASE STRUCTURE CREATE TABLE test ( test varchar(255) NOT NULL, PRIMARY KEY (test) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; */ $dbh = new PDO(DSN, USER, PASSWORD); $data = '\\' . uniqid(); $stmt = $dbh->prepare('INSERT INTO test(test) VALUES(:data)'); $stmt->execute(array('data' => $data)); $stmt = $dbh->prepare('SELECT test FROM test WHERE test LIKE :data'); $stmt->execute(array('data' => $data)); var_dump($stmt->fetchColumn()); $stmt = $dbh->prepare('SELECT test FROM test WHERE test LIKE :data'); $stmt->execute(array('data' => str_replace('\\', '\\\\', $data))); var_dump($stmt->fetchColumn()); Expected result: ---------------- string(14) "\521f3f450f597" bool(false) Actual result: -------------- bool(false) string(14) "\521f3f450f597" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65583&edit=1