我最近一直在用php做实验,我正在尝试理解会话。 到目前为止,我明白每个页面需要一个session_start(),如果我需要登录来查看某些页面/携带信息,但我无法弄清楚如何在登录页面后保留用户的信息。如何通过PHP登录重定向进行会话?
这里是我的login.php脚本:
<?php
session_start();
?>
<head>
<link rel="stylesheet" type="text/css" href="styles.css">
<link href='http://fonts.googleapis.com/css?family=Lato|Quattrocento+Sans|Oxygen|Hind|Raleway' rel='stylesheet' type='text/css'>
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script src="career.js"></script>
</head>
<body onload="fadeUp()">
<form id="login" class="login" action="logCheck.php" method="POST">
<div id="titleArea"><img src="tampa-bay.png" class="t2"><div class="workspaceTitle">CPC <br><align ="left">WorkSpace</align></div></div>
<center>
<table class="logTable">
<tr><td colspan="2"><input type="text" class="field" value="username" onclick='javascript: this.value = ""' name="user"></td></tr>
<tr><td colspan="2"><input type="password" class="field" onclick='javascript: this.value = ""' value="password" name="pass"></td></tr>
<tr><td></td><td colspan="2"><input type="submit" name="login" value="Login"></td></tr>
<tr><td></td><td colspan="2">Don't have an account?<a href="register.php"> Register Here</a></td></tr>
<tr><td></td><td colspan="2">Forgot your username/password?<a href="register.php"> Click Here</a></td></tr>
</table>
</center>
</form>
</body>
这里是相关的登录验证(logCheck.php)脚本
if(isset($_POST['login'])){
$username = mysqli_real_escape_string($con,$_POST['user']);
$pass = mysqli_real_escape_string($con,$_POST['pass']);
$sel_user = "select * from userdata where username='$username' AND password='$pass'";
$run_user = mysqli_query($con, $sel_user);
$check_user = mysqli_num_rows($run_user);
if($check_user>0){
$_SESSION['username']=$_POST['user'];
echo "<script>window.open('careerindex.php','_self')</script>";
}
else {
echo "<script>alert('Username or password is not correct, try again!')</script><script>window.open('login.php','_self')</script>";
}
}
?>
最后,我也有一个具有保持头在需要登录的所有页面上。这里是头的会话:
<?php
session_start();
if (isset($_SESSION['username'])) {
?>
logged in HTML and code here
<?php
} else {
?>
Not logged in HTML and code here
<?php
}
?>
我试图使用常规的session_start()在每一页上,使用的用户名(如$_SESSION['username']=$_POST['user'];
)会话变量。但我不明白我做错了什么。有什么建议么? (Ps,我试过谷歌搜索,查找答案在这里和W3学校,但没有任何方法建议似乎工作)
资源我试过了:http://www.formget.com/login-form-in-php/ http://phppot.com/php/php-login-script-with-session/ http ://stackoverflow.com/questions/16889995/simple-login-session-php http://www.homeandlearn.co.uk/php/php14p2.html 和http://stackoverflow.com/questions/10097887/ php-login-script – motoko96
你必须在logCheck.php中有'session_start()'来处理$ _SESSION变量 – Toumash