This article mainly introduces the method of realizing registration and login interface in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
At first I thought the two functions of registration and login on a website were magical. Later, I did some research and found that the truth is actually very simple. Let’s take a look at how to implement it. . . .
I created several files on my computer:
login.html (login page)
register.html (Registration page)
success.html (Login success redirect page)
return.html (Registration success page )
login.php
register.php
Login interface and registration interface and success.html are combined There is no
, everything is just some html tags 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 appears 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 It is the background 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 corresponding 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. You are welcome to ask questions and discuss and provide easier methods!
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study. At the same time, I also hope that everyone will support the PHP Chinese website.
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