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$_REQUEST = cleanArrayForMysql($_REQUEST);
$_GET     = cleanArrayForMysql($_GET);
$_POST    = cleanArrayForMysql($_POST);
$request  = $_REQUEST;

function cleanArrayForMysql($data)
{
	if(!get_magic_quotes_gpc())
		return (is_array($data))?array_map('cleanArrayForMysql', $data):mysql_real_escape_string($data);
	else
		return $data;
}

function RemoveXSS($val) { 
    // remove all non-printable characters. CR(0a) and LF(0b) and TAB(9) are allowed 
    // this prevents some character re-spacing such as <java\0script> 
    // note that you have to handle splits with \n, \r, and \t later since they *are* allowed in some inputs 
    $val = preg_replace('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/', '', $val); 
    
    // straight replacements, the user should never need these since they're normal characters 
    // this prevents like <IMG SRC=@avascript:alert('XSS')> 
    $search = 'abcdefghijklmnopqrstuvwxyz'; 
    $search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; 
    $search .= '1234567890!@#$%^&*()'; 
    $search .= '~`";:?+/={}[]-_|\'\\'; 
    for ($i = 0; $i < strlen($search); $i++) { 
        // ;? matches the ;, which is optional 
        // 0{0,7} matches any padded zeros, which are optional and go up to 8 chars 
        // @ @ search for the hex values 
        $val = preg_replace('/(&#[xX]0{0,8}'.dechex(ord($search[$i])).';?)/i', $search[$i], $val);//with a ; 
        // @ @ 0{0,7} matches '0' zero to seven times 
        $val = preg_replace('/(&#0{0,8}'.ord($search[$i]).';?)/', $search[$i], $val); // with a ; 
    } 
    // now the only remaining whitespace attacks are \t, \n, and \r 
    $ra1 = Array('javascript', 'vbscript', 'expression', 'applet', 'meta', '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); 
   
    $found = true; // keep replacing as long as the previous round replaced something 
    while ($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); // add in <> to nerf the tag 
            $val = preg_replace($pattern, $replacement, $val); // filter out the hex tags 
            if ($val_before == $val) { 
                // no replacements were made, so exit the loop 
                $found = false; 
            } 
        } 
    } 
    return $val; 
}