#37937 [Opn->Asn]: bound params inside of a CONCAT do not work

ID: 37937 Updated by: tony2001@php.net Reported By: ibexris at gmail dot com -Status: Open +Status: Assigned Bug Type: MySQLi related Operating System: linux, fedora core 5 PHP Version: 5.1.4 -Assigned To: +Assigned To: georg Previous Comments: ------------------------------------------------------------------------ [2006-06-27 20:30:45] ibexris at gmail dot com Further digging shows that there are also hidden characters returned from the query, and that they often change between executions of the code. ------------------------------------------------------------------------ [2006-06-27 20:27:35] ibexris at gmail dot com Description: ------------ Like the summary says... using a bound parameter inside of a CONCAT() produces strange results. Reproduce code: --------------- <?php $dbh = mysqli_init(); $dbh->real_connect('localhost', 'dbuser', '', 'dbname'); $sh = $dbh->prepare('SELECT CONCAT("xxx", ?, "xxx"), CONCAT("xxx", "abc", "xxx")'); $sh->bind_param('s', $x); $sh->bind_result($r, $r2); $x = 'abc'; $sh->execute(); $sh->fetch(); echo "\n$r\n$r2\n\n"; $dbh->close(); Expected result: ---------------- xxxabcxxx xxxabcxxx Actual result: -------------- On my system, this prints out: xxxabcxA xxxabcxxx The "A" changes on other systems (or goes away). However, both lines *should* be the same. Change the x's around in the first field and watch the results get even stranger, or remove them completely to have it work as expected (except that I need the CONCAT for my query). ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=37937&edit=1