note 99657 rejected from function.preg-match by danbrown

Note Submitter: drew at dinomite dot net ---- Though the documentation states that the return value on error will be FALSE (aka bool(false)), preg_match() in fact returns int(0). Always check preg_last_error(), which gives the truth.. <?php // Ensure we hit the recursion limit ini_set('pcre.recursion_limit', 1); // See http://us.php.net/preg_last_error $ret = preg_match('/(?:\D+|<\d+>)*[!?]/', 'foobar foobar foobar'); echo 'Return value is '; var_dump($ret); if ($ret === false) { echo '$ret is false; preg_last_error() says: ' . preg_last_error() . "\n"; } else { echo '$ret is not false; preg_last_error() says: ' . preg_last_error() . "\n"; }