PHP security filter code (provided by 360 with high security factor)

/**
* Filter dangerous parameters
* edit: bbs.it-home.org
*/
//Code By Safe3
function customError($errno, $errstr, $errfile, $errline)
{
echo "Error number: [$errno],error on line $errline in $errfile";
die();
}
set_error_handler("customError",E_ERROR);
$getfilter="'|(and|or)\b.+?(>|<|=|in|like)|\/\*.+?\*\/|<\s*script\b|\bEXEC\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\s+(TABLE|DATABASE)";
$postfilter="\b(and|or)\b.{1,6}?(=|>|<|\bin\b|\blike\b)|\/\*.+?\*\/|<\s*script\b|\bEXEC\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\s+(TABLE|DATABASE)";
$cookiefilter="\b(and|or)\b.{1,6}?(=|>|<|\bin\b|\blike\b)|\/\*.+?\*\/|<\s*script\b|\bEXEC\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\s+(TABLE|DATABASE)";
function StopAttack($StrFiltKey,$StrFiltValue,$ArrFiltReq){
if(is_array($StrFiltValue))
{
    $StrFiltValue=implode($StrFiltValue);
}
if (preg_match("/".$ArrFiltReq."/is",$StrFiltValue)==1){
        //slog("操作IP: ".$_SERVER["REMOTE_ADDR"]."操作时间: ".strftime("%Y-%m-%d %H:%M:%S")."操作页面:".$_SERVER["PHP_SELF"]."提交方式: ".$_SERVER["REQUEST_METHOD"]."提交参数: ".$StrFiltKey."提交数据: ".$StrFiltValue);
        print "360websec notice:Illegal operation!";
        exit();
}
}
//$ArrPGC=array_merge($_GET,$_POST,$_COOKIE);
foreach($_GET as $key=>$value){
    StopAttack($key,$value,$getfilter);
} //bbs.it-home.org
foreach($_POST as $key=>$value){
    StopAttack($key,$value,$postfilter);
}
foreach($_COOKIE as $key=>$value){
    StopAttack($key,$value,$cookiefilter);
}
if (file_exists('update360.php')) {
    echo "请重命名文件update360.php，防止黑客利用";
    die();
}
function slog($logs)
{
  $toppath=$_SERVER["DOCUMENT_ROOT"]."/log.htm";
  $Ts=fopen($toppath,"a+");
  fputs($Ts,$logs."rn");
  fclose($Ts);
}
?>

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