本文章提供这款防sql注入代码是一款php sql双过滤非法字符的函数,他可以根据用户自定的防sql注入,先是过滤一些sql命令,再是就是把post get 过滤一次,最好验证.
php防注入代码如下:
$arrfiltrate=array("update","delete","selert","drop","exec","cast","'","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 " "; if (emptyempty($strgourl)){ echo " "; }else{ echo " "; } echo "<script>alert('系统检测到非法字符!');history.back();</script>"; exit(); } }
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转载随意~请带上教程地址吧^^

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