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我创建了一个登录表单。我怎样才能使当用户登录时，他/她重定向到显示他/她姓名的页面？我已经浏览了很多关于如何做到这一点的教程，但没有什么是非常好的......

main_login.php：

<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>

login_success.php：

<?php
session_start();
if(!session_is_registered(myusername)){
header("location:http://main_login.php");
}
?>

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

检查登录.php：

<?php

$host="host"; // Host name 
$username="username"; // Mysql username 
$password="password"; // Mysql password 
$db_name="database"; // Database name 
$tbl_name="table"; // 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";
}
?>
4

3 回答 3

2

要发出 HTTP 重定向，Location标头应正确大写，并在标头名称及其值之间包含空格：

header('Location: login_success.php');
于 2012-06-07T17:03:14.560 回答
2

这个例子应该对你有所帮助，但我建议使用 mysqli 并且以纯文本形式存储你的密码是一个非常糟糕的主意。您应该考虑查找 mysqli、散列密码，并开始熟悉 php 5.4，因为这里使用的许多函数已经更改并且不再受支持。

检查登录.php

<?php

$host="host"; // Host name 
$username="username"; // Mysql username 
$password="password"; // Mysql password 
$db_name="database"; // Database name 
$tbl_name="table"; // 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']; 

// Remove Magic Quotes
if (get_magic_quotes_gpc()){
  $myusername = stripslashes($myusername);
  $mypassword = stripslashes($mypassword);
}
$sql = sprintf(
  "SELECT * FROM $tbl_name WHERE username='%s' and password='%s' LIMIT 1;",
  mysql_real_escape_string($myusername),
  mysql_real_escape_string($mypassword)
);
$result = mysql_query($sql);

// MySQL count
$count = mysql_num_rows($result);

if ($count){
  $_SESSION['username'] = $myusername; // $_SESSION['loggedin'] = true or false would work too
  $_SESSION['mypassword'] = $mypassword; // Why store the password in session data?
  header("Location: login_success.php");
}else{
  header("Location: main_login.php?msg=Login_Failed");
}
?>

login_success.php

<?php
session_start();
if (!isset($_SESSION['username']) || empty($_SESSION['username']){
  header("Location: mail_login.php");
}

?>
<html>
<body>
Welcome <?php echo $_SESSION['username']; ?>
Login Successful
</body>
</html>

main_login.php

<?php
if (isset($_GET['msg']) && !empty($_GET['msg']) echo $_GET['msg'];
?>
<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>

使用风险自负。:)

于 2012-06-07T18:31:49.467 回答
1

如果登录成功，您似乎已经能够将用户重定向到页面。您只需向该页面添加一些代码，例如 echo $_SESSION['username']; 希望能帮助到你。

于 2012-06-07T17:05:00.643 回答