我是新来的PHP,我试图使用php和mysql做一个简单的注册表单。 我按照教程,但它似乎并没有工作。
这里是我的代码:注册表单不起作用
con.php
<?php
$host = "******";
$user = "******";
$pass = "******";
$db = '******';
$con = mysql_connect($host,$user,$pass) or die('could not connect to database.');
mysql_select_db($db,$con) or die('could not find database');
?>
register.php
<?php
include "con.php";
$username = $_POST['user_name'];
$password = md5($_POST['password']);
$first = $_POST['first'];
$last = $_POST['last'];
$insert = "insert into users (user_name,password,first,last) values(".$username.",".$password.",".$first.",".$last.")";
mysql_query($insert) or die("Sorry could not complete signup");
echo 'Signup succsessfull';
?>
HTML
<form action='register.php' method='post'>
<div style='color:orange;'>First name:</div>
<input type='text' name='first' value='<?php if(isset($_POST["first"])){echo $_POST["first"];}?>'>
<div style='color:orange;'>Last name:</div>
<input type='text' name='last' value='<?php if(isset($_POST["last"])){echo $_POST["last"];}?>'>
<div style='color:orange;'>User name:</div>
<input type='text' name='user_name' value='<?php if(isset($_POST["user_name"])){echo $_POST["user_name"];}?>'>
<div style='color:orange;'>Password:</div>
<input type='password' name='password'>
<input type='reset' value='Reset'>
<input type='submit' value='Submit'>
</form>
如果有人能帮助解决这个问题,那将是非常好的,因为我不能。
您正在使用[an **过时的**数据库API](http://stackoverflow.com/q/12859942/19068)并应使用[现代替换](http://php.net/manual/) EN/mysqlinfo.api.choosing.php)。你也**易受[SQL注入攻击](http://bobby-tables.com/)**,现代的API会使[防御]更容易(http://stackoverflow.com/questions/60174/best-way-to-prevent-sql-injection-in-php)自己从。 – Quentin
您也[容易受到XSS](https://en.wikipedia.org/wiki/Cross-site_scripting) – Quentin
使用PDO,其实很简单。 – Callombert