why is this shell_exec() failing to execute my shell to create a symlink?

[Govinda <govinda.webdnatalk@xxxxxxxxx>]

this code:

<?php

	$testOutput = shell_exec("ls");

	$where2cd2='testDir/';
	$firstCMD="cd $where2cd2";
	 $firstOutput = shell_exec("$firstCMD");
	// $firstOutput = shell_exec('cd testDir/');
	$testOutput2 = shell_exec("ls");

	$secondCMD='ln -s amex_cid.gif myccGOV.gif';
	$secondOutput = shell_exec("$secondCMD");
	
	echo "testOutput:<br><pre>$testOutput</pre>";
	echo "testOutput2:<br><pre>$testOutput2</pre><br>firstCMD= 
$firstCMD<hr>";
	echo "firstOutput:<br><pre>$firstOutput</pre><br>secondCMD= 
$secondCMD<hr>";
	echo "secondOutput:<br><pre>$secondOutput</pre><br>thirdCMD= 
$thirdCMD<hr>";
	
?>

is not producing the symlink that I think it should.  (?!?)  (neither  
in the dir/ where this script lives, nor in the testDir/ where I am  
actually trying to create it, on the fly.
Server is not in safe mode.


------------
Govinda
govinda.webdnatalk@xxxxxxxxx

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