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PHP Login Session Verification Instance

Source: Internet
Author: User
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Interface: 

<html><head><title>Login 
     title
 > 
     Head
 ><body><formname="Fangbei"method="POST"action ="check_session_login.php"><divStyle="width:353"><dl><DT> 
     DT
 ><dd><divAlign="Left">Username:<inputtype="text"name="username" /> 
     Div
 > 
     DD
 ><dd><divAlign="Left">Password:<inputtype="password"name="pwd" /> 
     Div
 > 
     DD
 ><dd><pAlign="center"><inputtype="Submit"name="Submit"value ="Submit" /><inputtype="reset"name="reset"value="Reset" /> 
     P
 > 
     DD
 > 
     DL
 > 
     Div
 > 
     Form
 > 
     Body
 > 
     HTML
 >

Database preparation:

Username Pwd Userflag
Perry 123 1

Login Verification:


    Header"content-type:text/html; Charset=utf-8 ");$servername="localhost";$username="Root";$password="";$dbname="Paul.";$conn=NewMysqli ($servername,$username,$password,$dbname);if($conn->connect_error) { die("Connection failed:".$conn->connect_error);}$conn->query ("SET NAMES UTF8");//Get input information$username=$_post[' username '];$pwd=$_post[' pwd '];//Get the value of Session$sql="Select Username,userflag from test_login where username = ' $username ' and pwd = ' $pwd '";$result=$conn->query ($sql);//Judge user and passwordif($result->num_rows >0) {session_start ();//Judge permissions$row=$result->fetch_assoc ();if($row[' Userflag '] ==1or$row[' Userflag '] ==0){$_session[' username '] =$row[' username '];$_session[' Userflag '] =$row[' Userflag '];Echo"Welcome to visit"; }Else{Echo"User of the puzzle"; }}Else{Echo"The user name or password is incorrect";}

Welcome interface:


   
    header("Content-Type: text/html; charset=utf-8");session_start();if(isset($_SESSION['username'])){    if($_SESSION['userflag'] == 1)        echo"欢迎管理员".$_SESSION['username']."登录";    if($_SESSION['userflag'] == 0)        echo"欢迎用户".$_SESSION['username']."登录";}else{    echo"登录已过期";}unset($_SESSION['username']);unset($_SESSION['pwd']);unset($_SESSION['userflag']);echo"
会话结束";

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  • '). Text (i)); }; $numbering. FadeIn (1700); }); });

    The above describes the PHP login session verification example, including the content, I hope that the PHP tutorial interested in a friend helpful.

    • This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Related Keywords:
    login session php mysql php login session tutorial php create login session php login session mysql php session login session login php login php mysql session
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