Description:
------------
The below php script when run from command prompt runs successfully gives the output returned by perl script.
But when run on browser IIS6.0 php (CGI/Fast CGI) I get error.
I have pasted the test.php script. the perl script returns a numeric value.

Reproduce code:
---------------
<?php
$cmd="perl uploadpost.pl"; 
$pipe = popen("$cmd",'r');    
   while($s = fgets($pipe, 2048)) {
	  $output .= $s;
   };
   pclose($pipe);
   if (preg_match("/^\d+$/",$output)) {
      $sid=$output;
      echo "success.$sid";	
   }else{
echo "upload failed";
            }
?>

Expected result:
----------------
Success and $sid some numeric value which is returnes by the perl script

Actual result:
--------------
Warning: popen(perl uploadpost.pl,r): No error in D:\WFM_vDev_Tk\test.php on line 25 pipe value. Warning: fgets(): supplied argument is not a valid stream resource in D:\WFM_vDev_Tk\test.php on line 27 Warning: pclose(): supplied argument is not a valid stream resource in D:\WFM_vDev_Tk\test.php on line 30 .