php中传统验证与thinkphp框架

时间：2017-11-22|栏目：PHP教程|点击：次

PHP（超文本预处理器）可用于小型网站的搭建，当用户需要注册登录是，需要与后台数据库进行匹配合格才能注册和登录，传统的方式步骤繁多，需要先连接数据库再用sql语句进行插入。

<?php

header("Content-type: text/html; charset=utf-8");

$conn =mysqli_connect("localhost","root","");

if (!$conn){

echo "<script>alert('连接失败！');history.go(-1);</script>";

}

mysqli_select_db($conn,"liuyanban");

mysqli_query($conn,'SET NAMES utf8');

$password=$_POST['password'];

$username=$_POST['username'];

$face="yellow.png";

$result=mysqli_query($conn,"SELECT username from user1 where username = '$username'");

$a=mysqli_num_rows($result);

if($a)

{

echo "<script language=javascript>alert('用户名已存在！');location.href='reg.html'</script>";

}

else

{

$sql = mysqli_query($conn,"INSERT INTO user1(username,password,face)VALUES('1' ,'2','yellow.png')");

if($sql)

{

echo "<script language=javascript>alert('注册成功!');location.href='login.html'</script>";

}

else

{

echo "<script>alert('注册失败！');location.href='reg.html'</script>";

}

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