From:
Operating system:
PHP version: Irrelevant
Package: MySQLi related
Bug Type: Bug
Bug description:MySQLi fetch corrupting bound variables
Description:
------------
I have tested this in different versions of PHP and it seems to be a bug
from version 5.3.0 onwards.
It seems that from PHP version 5.3.0 onwards that when a MySQL select
statement returns zero rows the bind result variable is being overwritten
and set to a null value.
In the example attached to this post I initialize a variable called
$recordID and set it to 0;
In versions of PHP prior to version 5.3.0 after the fetch has ran the
$recordID would still be set to 0 when zero rows are returned. However from
versions 5.3.0 onwards the $recordID variable is overwritten and set to
null.
Test script:
---------------
<?php
$pID = 0;
$recordID = 0;
if ($stmt = $dbObj->prepare('SELECT `id`, `name` FROM MYTABLE WHERE id =
?)
{
if ($stmt->bind_param('i', $pID))
{
if ($stmt->bind_result($recordID, $name)
{
if ($stmt->execute())
{
$stmt->fetch();
}
}
}
}
?>
Expected result:
----------------
In versions of PHP prior to version 5.3.0 after the fetch has ran the
$recordID would still be set to 0 when zero rows are returned.
Actual result:
--------------
>From versions 5.3.0 onwards the $recordID variable is overwritten and set
to null.
--
Edit bug report at https://bugs.php.net/bug.php?id=55536&edit=1
--
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