Server safetest

safetest.php

<?php

// Config
$forbiden_functions = array('escapeshellarg', 'escapeshellcmd', 'exec', 'link', 'passthru', 'pcntl_exec', 'popen', 'proc_close', 'proc_get_status', 'proc_nice', 'proc_open', 'proc_terminate', 'symlink', 'shell_exec','system');
$must_functions = array( 'base64_decode', 'fpassthru', 'ini_set', 'php_uname');

// Start
$disabled_functions = array_map("trim", explode(",",@ini_get("disable_functions")));
$issues = array();

// Functions should be disabled
foreach ($forbiden_functions as $functions_ouput)
{  if(function_exists($functions_ouput) && !(in_array($functions_ouput, $disabled_functions)))
  	$issues[] = "Function ".$functions_ouput." should be disabled!";	}
unset($functions_ouput);

// Functions should be enabled
foreach ($must_functions as $functions_ouput)
{	if(!function_exists($functions_ouput) || in_array($functions_ouput, $disabled_functions))
		$issues[] = "Function ".$functions_ouput." should be enabled!";		}
unset($functions_ouput);

// Is eval here?
if( in_array("eval", $disabled_functions) )
{	$issues[] = "Language construct eval is required to be enabled in PHP!";	}

// Is safe mode enabled?
if (ini_get('safe_mode'))
	$issues[] = "Issue: safe_mode is On!";

// Is magic_quotes_gpc enabled?
if (ini_get('magic_quotes_gpc'))
	$issues[] = "Issue: magic_quotes_gpc is On!";

// Output results
if( !count($issues) )
{	echo "Your host is OK!";	}
else
{	echo "<pre>Your host have ".count($issues)." problems!\n\n";
	foreach($issues as $issue)
		echo "Issue: {$issue} \n";
		echo "</pre>";	}
?>