A relatively perfect PHP anti-SQL injection code. Many beginners have the experience of being SQL injection. Today we will share with you a relatively complete SQL anti-injection code. Students in need can refer to it/
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/************************* 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 ""; if (empty($StrGoUrl)){ echo ""; }else{ echo ""; } exit; } } /***************结束防止PHP注入*****************/ ?> |
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