完美的php防sql注入代码
一款比较完美的php防sql注入代码,很多初学者都有被sql注入的经验吧,今天我们来分享你一款比较完整的sql防注入代码,有需要的同学可以参考一下:
<? /************************* 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 $ArrFiltrate=array("'","or","and","union","where"); //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'>alert('传递的信息中不得包含{',or,and,union}等非法字符请您把他们换成{‘,OR,AND,UNION}');</script>"; if (empty($StrGoUrl)){ echo "<script language='javascript'>history.go(-1);</script>"; }else{ echo "<script language='javascript'>window.location='".$StrGoUrl."';</script>"; } exit; } } /***************结束防止PHP注入*****************/ ?>

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