#35103 [NEW]: mysqli bind_result incorrectly handles unsigned int

From: Date: Fri, 04 Nov 2005 10:17:14 +0000
Subject: #35103 [NEW]: mysqli bind_result incorrectly handles unsigned int
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-87561@lists.php.net to get a copy of this message 
From:             php at pjberkel dot com
Operating system: RHEL 4
PHP version:      5.0.5
PHP Bug Type:     MySQLi related
Bug description:  mysqli bind_result incorrectly handles unsigned int

Description:
------------
When using "mysqli_stmt_bind_result" to retrieve a 32bit unsigned integer
value from a mysql database (version 4.1.13-standard) that is greater than
the maximum *signed* value but less than the maximum *unsigned* value (i.e.
2147483647 < int <= 4294967295), the integer is returned incorrectly as a
signed value.

I did read in the manual that php does not support unsigned integers
(http://www.php.net/manual/en/language.types.integer.php), however in this
case, mysqli_stmt_bind_result should probably cast the result to a float.


Reproduce code:
---------------
<?php

$mysqli = new mysqli("host", "user", "pass", "db");
$mysqli->query("CREATE TABLE temp (id INT UNSIGNED NOT NULL)");
$mysqli->query("INSERT INTO temp (id) VALUES
(2147483647),(2147483648),(2147483649),(3800001532),(3900002281),(4294967295)");

/* BEGIN EXAMPLE OF BUG */
$stmt = $mysqli->prepare("SELECT id FROM temp");
$stmt->execute();
$stmt->bind_result($id);
while ($stmt->fetch()) {
	print $id . "<br>\n";
}
$stmt->close();
/* END EXAMPLE OF BUG */

$mysqli->query("DROP TABLE temp");
$mysqli->close();

?>


Expected result:
----------------
2147483647
2147483648
2147483649
3800001532
3900002281
4294967295


Actual result:
--------------
2147483647
-2147483648
-2147483647
-494965764
-394965015
-1


-- 
Edit bug report at http://bugs.php.net/?id=35103&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=35103&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35103&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35103&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=35103&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=35103&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=35103&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=35103&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=35103&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=35103&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=35103&r=notwrong
Not enough info:             http://bugs.php.net/fix.php?id=35103&r=notenoughinfo
Submitted twice:             http://bugs.php.net/fix.php?id=35103&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=35103&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=35103&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=35103&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=35103&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=35103&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=35103&r=float
No Zend Extensions:          http://bugs.php.net/fix.php?id=35103&r=nozend
MySQL Configuration Error:   http://bugs.php.net/fix.php?id=35103&r=mysqlcfg

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