《PHP應用：簡單實用的PHP防注入類實例》要點：
本文介紹了PHP應用：簡單實用的PHP防注入類實例，希望對您有用。如果有疑問，可以聯系我們。
PHP應用本文實例講述了簡單實用的PHP防注入類.分享給大家供大家參考.具體如下：
PHP應用PHP防注入注意要過濾的信息基本是get,post,然后對于sql就是我們常用的查詢,插入等等sql命令了,下面我給各位整理兩個簡單的例子,希望這些例子能給你網站帶來平安.
PHP應用PHP防注入類代碼如下:
代碼如下:
<?php
/**
?* 參數處理類
?* @author JasonWei
?*/
class Params
{
??? public $get = array();
?
??? public $post = array();
?
??? function __construct()
??? {
?if (!emptyempty($_GET)) {
???? foreach ($_GET as $key => $val) {
?if (is_numeric($val)) {
???? $this->get[$key] = $this->getInt($val);
?} else {
???? $this->get[$key] = $this->getStr($val);
?}
???? }
?}
?if (!emptyempty($_POST)) {
???? foreach ($_POST as $key => $val) {
?if (is_numeric($val)) {
???? $this->post[$key] = $this->getInt($val);
?} else {
???? $this->post[$key] = $this->getStr($val);
?}
???? }
?}
??? }
?
??? public function getInt($number)
??? {
?return intval($number);
??? }
?
??? public function getStr($string)
??? {
?if (!get_magic_quotes_gpc()) {
???? $string = addslashes($string);
?}
?return $string;
??? }
?
??? public function checkInject($string)
??? {
?return eregi('select|insert|update|delete|/*|*|../|./|union|into|load_file|outfile', $string);
??? }
?
??? public function verifyId($id = null)
??? {
?if (!$id || $this->checkInject($id) || !is_numeric($id)) {
???? $id = false;
?} else {
???? $id = intval($id);
?}
?return $id;
??? }
}
?>
例子二,代碼如下:
代碼如下:
<?php?
/*************************??
說明：????
判斷傳遞的變量中是否含有非法字符????
???
如$_POST、$_GET????
功能：????
防注入????
*************************/????
//要過濾的非法字符?????
$ArrFiltrate=array("'","or","and","union","where");?????
//出錯后要跳轉的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;?????
}?????
}?????
//驗證開始?????
foreach($ArrPostAndGet as $key=>$value){?????
if (FunStringExist($value,$ArrFiltrate)){?????
echo "<script language='javascript'>alert('傳遞的信息中不得包含{',or,and,union}等非法字符請您把他們換成{‘,ＯＲ,ＡＮＤ,ＵＮＩＯＮ}');</script>";?????
if (emptyempty($StrGoUrl)){?????
echo "<scriptlanguage='javascript'>history.go(-1);</script>";?????
}else{?????
echo "<scriptlanguage='javascript'>window.location='".$StrGoUrl."';</script>";?????
}?????
exit;?????
}?????
}?????
/***************結束防止PHP注入*****************/????
?>
PHP應用希望本文所述對大家的PHP程序設計有所贊助.
維易PHP培訓學院每天發布《PHP應用：簡單實用的PHP防注入類實例》等實戰技能，PHP、MYSQL、LINUX、APP、JS,CSS全面培養人才。
轉載請注明本頁網址：
http://www.snjht.com/jiaocheng/13444.html
