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首页 > 资讯列表 > 编程/数据库 >> PHP

php SQL防注入代码集合

PHP 2014-12-14 09:54:05 转载来源: 网络整理/侵权必删

本文为大家搜集了一些php实现的通用防注入代码,感兴趣的同学参考下. SQL防注入代码一 <?php /** * 防sql注入 * @author: zhuyubing@gmail

本文为大家搜集了一些php实现的通用防注入代码,感兴趣的同学参考下.

SQL防注入代码一


<?php
/**
* 防sql注入
* @author: zhuyubing@gmail.com
* */
/**
* reject sql inject
*/
if (!function_exists (quote))
{
function quote($var)
{
if (strlen($var))
{
$var=!get_magic_quotes_gpc() ? $var : stripslashes($var);
$var = str_replace("'","'",$var);
}
return "'$var'";
}
}
if (!function_exists (hash_num)){
function hash_num($input)
{
$hash = 5381;
for ($i = 0; $i < strlen($str); $i++)
{
$c = ord($str{$i});
$hash = (($hash << 5) + $hash) + $c;
}
return $hash;
}
}
/**************** end *************************/
?>

<?php
/**
* 防sql测试代码
CREATE TABLE IF NOT EXISTS `tb` (
`id` int(10) unsigned NOT NULL auto_increment,
`age` tinyint(3) unsigned NOT NULL,
`name` char(100) NOT NULL,
`note` text NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 ;
**/
include_once('common.php');
var_dump(hash_num('dddd'));
if(empty($_GET))
{
$_GET = array('age'=>'99','name'=>'a'b'c";','note'=>"a'b'nc#");
}
$age = (int)$_GET['age'];
$name = quote($_GET['name']);
$note = quote($_GET['note']);
$sql = "INSERT INTO `tb` ( `age`, `name`, `note`) VALUES
( $age, $name, $note)";
var_dump($sql);
?>


PHP 防止sql注入函数代码二：


<?php
$magic_quotes_gpc = get_magic_quotes_gpc();
@extract(daddslashes($_COOKIE));
@extract(daddslashes($_POST));
@extract(daddslashes($_GET));
if(!$magic_quotes_gpc) {
$_FILES = daddslashes($_FILES);
}

function daddslashes($string, $force = 0) {
if(!$GLOBALS['magic_quotes_gpc'] || $force) {
if(is_array($string)) {
foreach($string as $key => $val) {
$string[$key] = daddslashes($val, $force);
}
} else {
$string = addslashes($string);
}
}
return $string;
}
?>


php 防止sql注入代码三


function inject_check($sql_str) { //防止注入
$check = eregi('select|insert|update|delete|'|/*|*|../|./|union|into|load_file|outfile', $sql_str);
if ($check) {
echo "输入非法注入内容！";
exit ();
} else {
return $sql_str;
}
}
function checkurl() { //检查来路
if (preg_replace("/https教程?://([^:/]+).*/i", "1", $_server['http_referer']) !== preg_replace("/([^:]+).*/", "1", $_server['http_host'])) {
header("location: http://www.phperz.com");
exit();
}
}
//调用
checkurl();
$str = $_get['url'];
inject_check($sql_str);//这条可以在获取参数时执行操作

标签: php SQL 注入 代码 集合


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