GET POST COOKIE SECURITY SYSTEM

<?php
/*
Metalfrog Studios (GPL)
http://metalfrog.co.uk
Website Development, website SEO & Graphic Designers

USAGE: Put this at the top of your php and it will loop thought your GET,POST, COOKIES
It will remove any XSS code as well as make the code safe to store into a database or display on the page
*/

/*////////////////////////////////////////////////////////////
//////////////////////////////// Super Globes Security System
*/////////////////////////////////////////////////////////////
if ($_GET) 
	{
  	foreach ($_GET as $k => $v) 
		{
    	$_GET[$k] = mysql_real_escape_string(RemoveXSS(trim(stripslashes ($v))));
		$length = strlen($v);
		if ($length > 20 )
			{
			$v="";
			}
    	if (is_numeric ($v)) 
			{
			$length = strlen($v);
			if ($length > 11 )
				{
				$_GET[$k]="";
				}
      		$_GET[$k] = intval ($v);
    		}
  		}
	}
if ($_POST) 
	{
  	foreach ($_POST as $k => $v) 
		{
    	$_POST[$k] = mysql_real_escape_string(RemoveXSS(trim(stripslashes ($v))));
		$length = strlen($v);
		
		if ($length > 20 )
			{
			$_POST[$k]="";
			}
		}
		
    	if (is_numeric ($v)) 
			{
			$length = strlen($v);
			if ($length > 11 )
				{
				$_POST[$k]="";
				}
			$_POST[$k] = intval ($v);
    		}
  		}
	}
if ($_COOKIE) 
	{
  	foreach ($_COOKIE as $k => $v) 
		{
    	$_COOKIE[$k] = RemoveXSS(trim(stripslashes ($v)));
    	if (is_numeric ($v)) 
			{
			$_COOKIE[$k] = intval ($v);
    		}
  		}
	}
	
	
	
/*////////////////////////////////////////////////////////////
////////////////////////// Security System from XSS Injections
*/////////////////////////////////////////////////////////////
function RemoveXSS($val) 
	{
	$val = preg_replace('/([x00-x08][x0b-x0c][x0e-x20])/', '', $val);
   
   $search = 'abcdefghijklmnopqrstuvwxyz';
   $search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
   $search .= '1234567890!@#$%^&*()';
   $search .= '~`";:?+/={}[]-_|'';
   for ($i = 0; $i < strlen($search); $i++) 
   		{
      	$val = preg_replace('/(&#[xX]0{0,8}'.dechex(ord($search[$i])).';?)/i', $search[$i], $val); 
     	$val = preg_replace('/(&#0{0,8}'.ord($search[$i]).';?)/', $search[$i], $val); 
   		}
   
   $ra1 = Array('javascript', 'vbscript', 'expression', 'applet', 'xml', 'blink', 'link', 'style', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base');
   $ra2 = Array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload');
   $ra = array_merge($ra1, $ra2);
   
   $found = true; 
   while ($found == true) 
		{
		  $val_before = $val;
		  for ($i = 0; $i < sizeof($ra); $i++) 
			{
			 $pattern = '/';
			 for ($j = 0; $j < strlen($ra[$i]); $j++) 
				{
					if ($j > 0) 
						{
					   $pattern .= '(';
					   $pattern .= '(&#[xX]0{0,8}([9ab]);)';
					   $pattern .= '|';
					   $pattern .= '|(&#0{0,8}([9|10|13]);)';
					   $pattern .= ')*';
						}
				$pattern .= $ra[$i][$j];
				}
			 $pattern .= '/i';
			 $replacement = substr($ra[$i], 0, 2).'<x>'.substr($ra[$i], 2); 
			 $val = preg_replace($pattern, $replacement, $val);
			 if ($val_before == $val) 
				{
				
				$found = false;
				}
			}
		}
	return $val;
	}	
?>