Home > Backend Development > PHP Tutorial > SQL injection in PHP search_PHP tutorial

SQL injection in PHP search_PHP tutorial

WBOY
Release: 2016-07-13 10:27:28
Original
929 people have browsed it

-------------------------------------------------- ---------------------------------------------

Prevent query sql attacks => Filter keywords (code part)

---------------------@chenwei ------------- ----------------

$k = $_REQUEST['k'];

$k = addslashes($k); //Escape: single quote, double quote, backslash, NULL

$k = str_replace('%', '%', $k);

$k = str_replace('_', '_', $k);

$sql = "select * from users where name like '%$k%'";

if(!empty($k)){

 $res = mysql_query($sql, $con) or die(mysql_error());

 if($row = mysql_fetch_assoc($res)){

foreach($row as $k=>$v){

echo $row[$k].':'.$row[$v].'
';

 }

 }

}else{

echo '******';

}

-------------------------------------------------- ----------------------------------------

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/817471.htmlTechArticle------------------------ -------------------------------------------------- --------------- Prevent query sql attacks = filter keywords (code part) --------------- ...
Related labels:
php
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template