Description:
------------
From PHP I cannot call two stored procedure in the same connection (I guess it depends on the fact they are returning MULTI_RESULTS, it doesn't happen with normal SELECTs)

When I run the second one I get the following error: "Commands out of sync; you can't run this command now".

I made a lot of tests with different MySQL versions, at the moment I'm running a 5.0.27 built from source and PHP 4.4.4 built from source and linked to 5.0.27 (not using the bundled library) and I get that error but, for example, I got it working with client libraries from MySQL 5.1.7 beta (but not with 5.1.12 beta).

I already posted this bug to MySQL but they closed it telling it's not a bug (http://bugs.mysql.com/?id=24783).
They pointed me at http://dev.mysql.com/doc/refman/5.0/en/c-api-multiple-queries.html
but I cannot find a PHP equivalent for mysql_next_result


Reproduce code:
---------------
#!/usr/bin/php -q
<?php
define('CLIENT_MULTI_RESULTS', 131072);

$conn = mysql_connect("localhost", "root", "", 1 , CLIENT_MULTI_RESULTS) or die(mysql_error());
mysql_select_db("tester") or die(mysql_error());

$query = "CALL test_proc('webrainstorm')";

for ($i = 1; $i < 5; $i++) {
        $ret = mysql_unbuffered_query($query) or
die(mysql_error()."\n");
        while ($row = mysql_fetch_array($ret, MYSQL_ASSOC)) {
                foreach ($row as $col) {
                        echo "$col\t";
                }
                echo "\n";
        }
        mysql_free_result($ret);
        unset($ret);
}

mysql_close($conn);
?>

Find SQL test script at http://www.webrainstorm.it/tmp/test.sql

Expected result:
----------------
# ./test.php
enabled
enabled
enabled
enabled

Actual result:
--------------
# ./test.php
enabled
Commands out of sync; you can't run this command now