【www.gdgbn.com--php常用代码】

php教程
//要过滤的非法字符
$ArrFiltrate=array(”‘”,”;”,”union”);
//出错后要跳转的url,不填则默认前一页
$StrGoUrl=””;
//是否存在数组中的值
function FunStringExist($StrFiltrate,$ArrFiltrate){
foreach ($ArrFiltrate as $key=>$value){
if (eregi($value,$StrFiltrate)){
return true;
}
}
return false;
}
//合并$_POST 和 $_GET
if(function_exists(array_merge)){
$ArrPostAndGet=array_merge($HTTP_POST_VARS,$HTTP_GET_VARS);
}else{
foreach($HTTP_POST_VARS as $key=>$value){
$ArrPostAndGet[]=$value;
}
foreach($HTTP_GET_VARS as $key=>$value){
$ArrPostAndGet[]=$value;
}
}
//验证开始
foreach($ArrPostAndGet as $key=>$value){
if (FunStringExist($value,$ArrFiltrate)){
echo “<script language=”javascript教程”>alert(”非法字符”);</script>”;
if (emptyempty($StrGoUrl)){
echo “<script language=”javascript”>history.go(-1);</script>”;
}else{
echo “<script language=”javascript”>window.location=””.$StrGoUrl.””;</script>”;
}
exit;
}
}
?>

本文来源：http://www.gdgbn.com/jiaocheng/24046/