以下是要实施安全登录的登录系统/
main_login.php <form name="form1" method="post" action="checklogin.php"> Username:<input name="myusername" type="text" id="myusername" /> <br /> Password:<input name="mypassword" type="password" id="mypassword" /> <input type="submit" name="Submit" value="Login" /> </form>
Checklogin.php
<?php ob_start(); $host="localhost"; // Host name $username="root"; // Mysql username $password=""; // Mysql password $db_name="cosmos"; // Database name $tbl_name="members"; // Table name // Connect to server and select databse. mysql_connect("$host","$username","$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // Define $myusername and $mypassword $myusername=$_POST['myusername']; $mypassword=$_POST['mypassword']; // To protect MySQL injection (more detail about MySQL injection) $myusername = stripslashes($myusername); $mypassword = stripslashes($mypassword); $myusername = mysql_real_escape_string($myusername); $mypassword = mysql_real_escape_string($mypassword); $sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'"; $result=mysql_query($sql); // Mysql_num_row is counting table row $count=mysql_num_rows($result); // If result matched $myusername and $mypassword,table row must be 1 row if($count==1){ // Register $myusername,$mypassword and redirect to file "login_success.php" session_register("myusername"); session_register("mypassword"); header("location:login_success.php"); } else { echo "Wrong Username or Password"; } ob_end_flush(); ?>
login_success.php
<?php session_start(); if(isset($_SESSION['username']) && ($_SESSION['username'] == $myusername)){ header("location:main_login.php"); } ?> <html> <body> Login Successful. <a href="logout.php">Logout</a> </body> </html>
logout.php
<?php session_destroy(); header("location:main_login.php"); ?>
问题是我想通过密码加密或任何其他方法(如果有的话)进行安全登录.我是PHP的初学者
您可以使用md5将密码加密到一定程度.您需要在用户注册时和登录md5之前输入密码md5 ….
例:
//定义$myusername和$mypassword
$名为myUsername = $_ POST [ ‘名为myUsername’];
$输入mypassword = $_ POST [ ‘输入mypassword’];
$mypassword = md5($mypassword);
每当您有用户注册时,您还需要使用此功能.
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