exec() cause an infinite loop of starting requested program
<p>OS: Linux.</p>

<p>WHM, cpanel used.</p>

<p>PHP 5.3.2 (cli) (built: Jun 11 2010 02:25:31)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies</p>

<pre><code>&lt;?php
exec("php xyz.php");
?&gt;
</code></pre>

<p>starts calling the xyz.php innumerable times. the server hangs after sometime.</p>

<p>calling 'php xyz.php' from the console works fine. </p>
