Description:
------------
1. proc_open('I_dont_exist.exe') returns true.  I feel it shouldn't (I'm guessing this is because php launches cmd.exe and asks it to run I_dont_exist.exe)

2. popen('I_dont_exist.exe') returns true if I execute the script from the commandline using php.exe -n -f test.php (see above for what I would expect), but if I execute it via php-cgi.exe in IIS, I get HTTP Error 502.2 - Bad Gateway (see below).

Reproduce code:
---------------
	$proc = @proc_open(
		'c:\\I_dont_exist1.exe'
		,array( 0=>array('file','nul','r'), 1=>array('file','nul','w'), 2=>array('file','nul','w') )
		,$pipes
		);
	if ($proc===false)
		die('failed proc_open');
	proc_close($proc);
	echo 'proc_open ok'."<br>\r\n";	
	$proc = @popen('c:\\I_dont_exist2.exe','r');
	if ($proc===false)
		die('failed popen');
	pclose($proc);
	echo 'popen ok'."<br>\r\n";	


Expected result:
----------------
ideally both should fail, as the target .exe doesn't exist, but not cause the script to die

Actual result:
--------------
HTTP Error 502.2 - Bad Gateway
The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are "'c:\I_dont_exist2.exe' is not recognized as an internal or external command, operable program or batch file. X-Powered-By: PHP/5.2.6 Content-type: text/html start<br> proc_open ok<br> popen ok<br> end<br> ".