#38643 [Opn->Bgs]: PDO/mysql: wrong results in prepared statement when using parameter twice

ID: 38643 Updated by: iliaa@php.net Reported By: chris dot vigelius at gmx dot net -Status: Open +Status: Bogus Bug Type: PDO related Operating System: Linux PHP Version: 5.1.5 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 This is a limitation of the MySQL prepared statement syntax which does not support re-usable identifiers. To make your query work you need to set PDO::ATTR_EMULATE_PREPARES to true. Previous Comments: ------------------------------------------------------------------------ [2006-08-30 11:31:40] chris dot vigelius at gmx dot net Expected result: ---------------- array(0) { } array(0) { } Actual result: -------------- array(2) { [0]=> object(stdClass)#4 (2) { ["name"]=> string(5) "fritz" ["email"]=> string(16) "fritz@server.com" } [1]=> object(stdClass)#5 (2) { ["name"]=> string(4) "otto" ["email"]=> string(15) "otto@server.com" } } array(0) { } ------------------------------------------------------------------------ [2006-08-30 11:27:56] chris dot vigelius at gmx dot net // prepare the database $dbh = new PDO('mysql:host=localhost;dbname=test', 'test', 'test'); $dbh->exec("DROP TABLE IF EXISTS user"); $dbh->exec("CREATE TABLE user ( name VARCHAR(32), email VARCHAR(32), PRIMARY KEY (name) );"); $dbh->exec("INSERT INTO user VALUES ('fritz', 'fritz@server.com')"); $dbh->exec("INSERT INTO user VALUES ('otto', 'otto@server.com')"); // this will return 2 rows where 0 are expected $stmt = $dbh->prepare("SELECT * FROM user WHERE name=:user OR email=:user"); $stmt->execute(array(':user' => 'franz')); $rows = $stmt->fetchAll(PDO::FETCH_OBJ); var_dump($rows); // this workaround will return 0 rows as expected $stmt = $dbh->prepare("SELECT * FROM user WHERE name=:user1 OR email=:user2"); $stmt->execute(array(':user1' => 'franz', ':user2' => 'franz')); $rows = $stmt->fetchAll(PDO::FETCH_OBJ); var_dump($rows); ------------------------------------------------------------------------ [2006-08-30 11:12:34] tony2001@php.net Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. ------------------------------------------------------------------------ [2006-08-30 11:11:15] chris dot vigelius at gmx dot net the current snapshot does NOT solve the problem - there are still all rows returned. ------------------------------------------------------------------------ [2006-08-29 20:45:43] tony2001@php.net Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.2-win32-latest.zip ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/38643 -- Edit this bug report at http://bugs.php.net/?id=38643&edit=1