#46556 [Com]: There is no good method to escape a string for use in a (mySQL) LIKE clause

ID: 46556 Comment by: taco at procurios dot nl Reported By: taco at procurios dot nl Status: Open Bug Type: PDO related Operating System: linux PHP Version: 5.2.6 Assigned To: johannes New Comment: There is no need for such a method in mysqli because mysqli_real_escape_string() does not add quotes to the resulting string. Using mysqli you would be able to do this: $q = "SELECT...WHERE foo LIKE '%" . addcslashes($MySQLi->real_escape_string($evilVar), '%_') . "%'"; In PDO this is impossible because of the added quotes. Previous Comments: ------------------------------------------------------------------------ [2008-11-13 15:30:49] lstrojny@php.net Maybe something for PDOv2 or mysqli? ------------------------------------------------------------------------ [2008-11-12 15:56:53] taco at procurios dot nl Description: ------------ There is no good method to escape a string for use in a (mySQL) LIKE clause. In a query like "SELECT foo FROM bar WHERE baz LIKE '%" . $qux . "%'" the value of $qux should be escaped for both the query itself (like PDO::quote() does) as the LIKE clause (i.e. escaping % and _ characters. Using PDO the only way to escape a variable is using either PDOStatement::bindParam() or PDO::quote(). The first is not suitable for two reasons: 1. Not every query is a prepared statement 2. There is no way to escape % and _ (escaping them first will result in the \ being escaped: \% becomes \\%) The latter is not suitable because it will add quotes to the string, so you'll have to get rid of the quotes, escape % and _ and add the result to the query. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=46556&edit=1