From:             brad at wcubed dot net
Operating system: FreeBSD 9.1 amd64
PHP version:      5.4.12
Package:          PDO related
Bug Type:         Bug
Bug description:No results when re-executing PDO dblib query using same variable

Description:
------------
Environment:

MS SQL Server 2008 R2
FreeTSD 0.64_9,1

No results are returned from dblib PDO::query() + PDOStatement::fetchAll()
if the same variable is re-used from a previous query/fetch.

If the variable is unset() before the second query, the behavior is as
expected.

This problem is reproducible on both a fresh install of FreeBSD 9.1 and
longstanding 8.2 install. This behavior was not evident on the FreeBSD 8.2
install prior to a php upgrade from 5.3.8 to 5.4.12.

Test script:
---------------
$dbh = new PDO("dblib:host=$host;dbname=$dbname", $user, $pass);

$create = $dbh->exec('DROP TABLE foo');
$create = $dbh->exec('CREATE TABLE foo (ID int PRIMARY KEY IDENTITY (1,1)
NOT NULL, bar VARCHAR(10))');
$insert = $dbh->exec('INSERT INTO foo (bar) VALUES (\'baz\')');

$qry = 'select * from foo';

$stmt = $dbh->query($qry);
$results = $stmt->fetchAll(PDO::FETCH_NUM);
print_r($results);

$stmt = $dbh->query($qry);
$results = $stmt->fetchAll(PDO::FETCH_NUM);
print_r($results);

unset($stmt);
$stmt = $dbh->query($qry);
$results = $stmt->fetchAll(PDO::FETCH_NUM);
print_r($results);

Expected result:
----------------
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => baz
        )

)
Array
(
)
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => baz
        )

)

Actual result:
--------------
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => baz
        )

)
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => baz
        )

)
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => baz
        )

)

-- 
Edit bug report at https://bugs.php.net/bug.php?id=64328&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=64328&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=64328&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=64328&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=64328&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=64328&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=64328&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=64328&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=64328&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=64328&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=64328&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=64328&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=64328&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=64328&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64328&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=64328&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=64328&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=64328&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64328&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=64328&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=64328&r=mysqlcfg

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