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Implementation case of php registration and login interface (recommended)_php example
- WBOYOriginal
- 2016-12-05 13:28:164949browse
At first, I thought the two functions of registration and login on a website were magical. Later, after doing some research on my own, I found that the principle is actually very simple. Let’s take a look at how to implement it. . . .
I created a few files on my computer:
login.html (login page)
register.html (registration page)
success.html (jump page after successful login)
return.html (registration success page)
login.php
register.php
The login interface, registration interface and success.html are not there
Everything is html markup as follows:
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>登录界面</title> </head> <body> <form method="post" action="login.php"> 账号： <input type="text" name="usernamel"><br/><br/> 密码： <input type="password" name="passwordl"> <input type="submit" value="登录" name="subl"> <a href="http://127.0.0.1:8080/register.html">没有账号，注册</a> </form> </body> </html>
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>会员注册</title> </head> <body> <form method="post" action="register.php"> 账 户： <input type="text" name="username"><br/><br/> 密 码： <input type="password" name="password"><br/><br/> 密码确认： <input type="password" name="password2"> <input type="submit" value="注册" name="sub"> </form> </body> </html>
return.html is the page that is displayed after successful registration. There is a js code in it that is used to return to the login interface regularly
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>
<body>
注册成功！<br/>
5秒后返回登录界面<br/>
你也可以直接点击回到<a href="http://127.0.0.1:8080/login.html">登录页面</a>
<script type="text/javascript">
setTimeout("ren()",5000);
function ren()
{
window.location="http://127.0.0.1:8080/login.html";
}
</script>
</body>
</html>
register.php This is the backend page corresponding to the registration page
<?php
$link=mysql_connect("localhost","root","207207");//链接数据库
header("Content-type:text/html;charset=utf-8");
if($link)
{
//echo"链接数据库成功";
$select=mysql_select_db("login",$link);//选择数据库
if($select)
{
//echo"选择数据库成功！";
if(isset($_POST["sub"]))
{
$name=$_POST["username"];
$password1=$_POST["password"];//获取表单数据
$password2=$_POST["password2"];
if($name==""||$password1=="")//判断是否填写
{
echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."请填写完成！"."\"".")".";"."</script>";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";
exit;
}
if($password1==$password2)//确认密码是否正确
{
$str="select count(*) from register where username="."'"."$name"."'";
$result=mysql_query($str,$link);
$pass=mysql_fetch_row($result);
$pa=$pass[0];
if($pa==1)//判断数据库表中是否已存在该用户名
{
echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."该用户名已被注册"."\"".")".";"."</script>";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";
exit;
}
$sql="insert into register values("."\""."$name"."\"".","."\""."$password1"."\"".")";//将注册信息插入数据库表中
//echo"$sql";
mysql_query($sql,$link);
mysql_query('SET NAMES UTF8');
$close=mysql_close($link);
if($close)
{
//echo"数据库关闭";
//echo"注册成功！";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/return.html"."\""."</script>";
}
}
else
{
echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."密码不一致！"."\"".")".";"."</script>";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";
}
}
}
}
?>
login.php login interface corresponds to the background file
<?php
header("Content-type:text/html;charset=utf-8");
$link=mysql_connect("localhost","root","207207");
if($link)
{
$select=mysql_select_db("login",$link);
if($select)
{
if(isset($_POST["subl"]))
{
$name=$_POST["usernamel"];
$password=$_POST["passwordl"];
if($name==""||$password=="")//判断是否为空
{
echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."请填写正确的信息！"."\"".")".";"."</script>";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/login.html"."\""."</script>";
exit;
}
$str="select password from register where username="."'"."$name"."'";
mysql_query('SET NAMES UTF8');20 $result=mysql_query($str,$link);
$pass=mysql_fetch_row($result);
$pa=$pass[0];
if($pa==$password)//判断密码与注册时密码是否一致
{
echo"登录成功！";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/success.html"."\""."</script>";
}
{
echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."登录失败！"."\"".")".";"."</script>";
echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/login.html"."\""."</script>";
}
}
}
}
?>
I still have a lot to improve when I have nothing to do. Everyone is welcome to ask questions and discuss and provide easier methods!
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