--TEST-- MySQL PDO->prepare(), emulated PS, anonymous placeholder --SKIPIF-- --FILE-- setAttribute(PDO::MYSQL_ATTR_DIRECT_QUERY, 0); if (0 != $db->getAttribute(PDO::MYSQL_ATTR_DIRECT_QUERY)) printf("[002] Unable to switch off emulated prepared statements, test will fail\n"); $db->exec('DROP TABLE IF EXISTS test'); $db->exec(sprintf('CREATE TABLE test(id INT, label CHAR(255)) ENGINE=%s', PDO_MYSQL_TEST_ENGINE)); $db->exec("INSERT INTO test(id, label) VALUES (1, 'row1')"); // So, what will happen? More placeholder but values and // placeholders in interesting places... $stmt = $db->prepare('SELECT ? FROM test WHERE ? > ?'); $stmt->execute(array('test')); if ('00000' !== $stmt->errorCode()) { printf("[003] Execute has failed, %s %s\n", var_export($stmt->errorCode(), true), var_export($stmt->errorInfo(), true)); } var_dump($stmt->fetchAll(PDO::FETCH_ASSOC)); // now the same with emulated PS printf("now the same with emulated PS\n"); $db->setAttribute(PDO::MYSQL_ATTR_DIRECT_QUERY, 1); if (1 != $db->getAttribute(PDO::MYSQL_ATTR_DIRECT_QUERY)) printf("[004] Unable to switch on emulated prepared statements, test will fail\n"); $stmt = $db->prepare('SELECT ? FROM test WHERE ? > ?'); $stmt->execute(array('test')); if ('00000' !== $stmt->errorCode()) printf("[005] Execute has failed, %s %s\n", var_export($stmt->errorCode(), true), var_export($stmt->errorInfo(), true)); var_dump($stmt->fetchAll(PDO::FETCH_ASSOC)); } catch (PDOException $e) { printf("[001] %s [%s] %s\n", $e->getMessage(), $db->errorCode(), implode(' ', $db->errorInfo())); } print "done!"; ?> --CLEAN-- exec('DROP TABLE IF EXISTS test'); ?> --EXPECTF-- Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number in %s on line %d [003] Execute has failed, 'HY093' array ( 0 => 'HY093', 1 => NULL, 2 => NULL, ) array(0) { } now the same with emulated PS Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens in %s on line %d [005] Execute has failed, 'HY093' array ( 0 => 'HY093', 1 => NULL, 2 => NULL, ) array(0) { } done!