<?php
/*************************
說明:
判斷傳遞的變量中是否含有非法字符
如$_POST、$_GET
功能:
防注入
**************************/
//要過濾的非法字符
$ArrFiltrate=array("''''",";","union");
//出錯後要跳轉的url,不填則默認前一頁
$StrGoUrl="";
//是否存在數組中的值
function FunStringExist($StrFiltrate,$ArrFiltrate){
foreach ($ArrFiltrate as $key=>$value){
if (eregi($value,$StrFiltrate)){
return true;
}
}
return false;
}
//合並$_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;
}
}
//驗證開始
foreach($ArrPostAndGet as $key=>$value){
if (FunStringExist($value,$ArrFiltrate)){
echo "<script language=\"javascript\">alert(\"非法字符\");</script>";
if (empty($StrGoUrl)){
echo "<script language=\"javascript\">history.go(-1);</script>";
}else{
echo "<script language=\"javascript\">window.location=\"".$StrGoUrl."\";</script>";
}
exit;
}
}
?>
保存為checkpostandget.php
然後在每個php文件前加include(“checkpostandget.php“);即可