is.exec.enabled.php

<?php

////	IS exec() enabled
// A simple `is` script to determine if
// exec() is enabled and working.
//
// Inputs: None;
//
// Outputs:
// - $Exec_Enabled
//	true if enabled
//	false if not
//
// MIT Licensed

if (
	// IF Function Exists
	function_exists('exec') &&
	// AND NOT in the array of disabled functions
	!in_array('exec', array_map('trim', explode(', ', ini_get('disable_functions')))) &&
	// AND NOT in safe mode
	strtolower(ini_get('safe_mode')) != 1 &&
	// AND it actually works
	// (this will generate a warning if it doesn't, but we tried to check)
	exec('echo WORKING') == 'WORKING'
) {
	// exec() is enalbed
	$Exec_Enabled = true;
} else {
	// exec() is NOT enalbed
	$Exec_Enabled = false;
}