Description:
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In a PHP script running under IIS 5.1, with Windows XP (this has been reproduced on Windows 2000 as well), I try to execute another PHP process and get as many php sessions as can open up till my machine starts to halt because it goes out of memory.  

Note, I have made sure it hits that line of code only once, by doing "cmd /c Start C:\php\php.exe -f phpfile.php" and doing an echo "before"; and echo "after"; before and after the line of code, before and after get echoed ONCE.  

This command works correctly via the commandline.

Reproduce code:
---------------
<?PHP
  exec('c:\php\php.exe -f C:\inetpub\wwwroot\anotherphpfile.php');
?>



Expected result:
----------------
The application to run once.. not 50-100 or more times..



Actual result:
--------------
PHP executes numerous times, for one line of code..