2014-11-25 140 views
-2

我得到這個錯誤,當我輸入我的用戶名和密碼。Php登錄錯誤

致命錯誤:調用到Z中未定義的函數了session_register():\ XAMPP \ htdocs中\ ZED \ checklogin.php在線路32

下面是代碼。

main_login.php

<!DOCTYPE html> 
</html lang="en"> 
    <head> 
     <meta charset="utf-8"> 
     <title>Test</title> 
    </head> 
    </body> 
     <table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC"> 
     <tr> 
     <form name="form1" method="post" action="checklogin.php"> 
     <td> 
     <table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF"> 
     <tr> 
     <td colspan="3"><strong>Member Login </strong></td> 
     </tr> 
     <tr> 
     <td width="78">Username</td> 
     <td width="6">:</td> 
     <td width="294"><input name="myusername" type="text" id="myusername"></td> 
     </tr> 
     <tr> 
     <td>Password</td> 
     <td>:</td> 
     <td><input name="mypassword" type="text" id="mypassword"></td> 
     </tr> 
     <tr> 
     <td>&nbsp;</td> 
     <td>&nbsp;</td> 
     <td><input type="submit" name="Submit" value="Login"></td> 
     </tr> 
     </table> 
     </td> 
     </form> 
     </tr> 
     </table> 
    </body> 
</html> 

checklogin

<?php 

$host="localhost"; // Host name 
$username="root"; // Mysql username 
$password="password"; // Mysql password 
$db_name="test"; // 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"); 

// username and password sent from form 
$myusername=$_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"; 
} 
?> 

login_success.php

// Check if session is not registered, redirect back to main page. 
// Put this code in first line of web page. 
<?php 
session_start(); 
if(!session_is_registered(myusername)){ 
header("location:main_login.php"); 
} 
?> 

<html> 
<body> 
Login Successful 
</body> 
</html> 

logout.php

// Put this code in first line of web page. 
<?php 
session_start(); 
session_destroy(); 
?> 
+3

見http://stackoverflow.com/questions/3682615/how-to-fix-the-session-register-deprecated-issue – 2014-11-25 00:34:18

+2

石器時代代碼,真的需要被移動到本世紀 – 2014-11-25 00:36:45

+0

有趣的用途結束標籤。 「」作爲開始標籤做什麼?或''作爲開標籤?如果這確實來自教程,則需要從內存中清除它的所有存在。 – 2014-11-25 00:42:13

回答

4

您正在關注一個非常舊的教程(和錯誤的)教程。所有mysql_*功能過時,你應該尋找到PDO1MySQLi2

你的錯誤消息:

Fatal error: Call to undefined function session_register() in Z:\xampp\htdocs\zed\checklogin.php on line 32 

國,由於session_register()也已經過時。您需要設置的值是這樣的:

$_SESSION['username'] = 'theusername'; 

那麼你的頁面上,你檢查,如果用戶登錄,您應該使用這樣的事情:

session_start(); 
if(!isset($_SESSION['username']) || empty($_SESSION['username'])) { 
    die(header("Location: /login")); 
} 

- PDO

- MySQLi


而且額外的餅乾點,這裏有一個例子PDO查詢。

$db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password'); 
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); 

$stmt = $db->prepare("SELECT * FROM $tbl_name WHERE username=? and password=?"); 
$stmt->bindValue(1, $username, PDO::PARAM_STR); 
$stmt->bindValue(2, $password, PDO::PARAM_STR); 
if($stmt->execute()){ 
    if($stmt->rowCount() == 1) { 
     $data = $stmt->fetchObject(); 
     $_SESSION['username'] 
    } 
} 

免責聲明以上是僞代碼,我建議你看看PDO PHP的例子。