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<?php /************************* 说明: 判断传递的变量中是否含有非法字符 如$_post、$_get 功能: 防注入 **************************/ //要过滤的非法字符 这个过滤的字符 还可以增加 $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){ //开源代码phpfensi.com $arrpostandget[]=$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="网页特效">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; } } ?>