Description:
------------
Linux app server running php 5.4.16 and pdo_ibm-1.3.3, connecting to db2 connect, 
which then connects to db2 server.

The code included makes php just crash with no errors, just totally dies with zero 
output. From all the troubleshooting and narrowing down to this code, all I can 
figure is that it is something to do with multiple out parameters. We can call 
sprocs with single out parameters fine. The same code also works in php 5.3 branch 
with same pdo_ibm-1.3.3, so something in pdo? must have changed in 5.4?

Also, just to be clear, changing the data type to 
PDO::PARAM_STR|PDO::PARAM_INTPUT_OUTPUT, adding a size parameter, trying 
PARAM_INT, none of the combinations I could think of make any difference.

Test script:
---------------
// MY_SPROC(inparam, inparam, outparam, outparam)
$input1 = 123;
$input2 = "Hello";
$output1 = "";
$output2 = "";

$sql = "CALL MY_SPROC(?, ?, ?, ?)";
$stmt = $db->prepare($sql);
$stmt->bindParam(1, $input1, PDO::PARAM_STR);
$stmt->bindParam(2, $input2, PDO::PARAM_STR);
$stmt->bindParam(3, $output1, PDO::PARAM_STR);
$stmt->bindParam(4, $output2, PDO::PARAM_STR);

$stmt->execute();

Expected result:
----------------
I expect $output1 and $output2 to be populated and not crash.

Actual result:
--------------
PHP just crashes with no output