[php]代码库
<html>
<!-- 一个简单的表单 -->
<form action="" method="post">
username:<input type="text" name="username"><br>
password:<input type="password" name="password"><br>
<input type="submit" name="submit" value="Login">
</form>
</html>
<?php
include 'conn.php';//连接数据库文件
if(!empty($_POST['submit'])){
$username = str_replace(" ", "", $_POST['username']);
$sql = "select * from b_information where `username`='$username'";
$query = mysql_query($sql);
$row = mysql_fetch_array($query);
$us = is_array($row);
//print_r(md5($_POST['password'].SALT));
//echo $us;
if($us && $row['password']==md5($_POST['password'].SALT)){
echo "yes";
}else{
if($us){
echo "ps wrong";
}else{
echo "no this user";
}
}
}
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