index.php
<div id="top_right_section">
<div id="head_icon">
<ul class="top">
<li class="hover"><a href="#" onClick="revealModal('modalPage')">Login</a>
</li>
<li><a href="registration.php" class="about">Registration</a>
</li>
</ul>
</div>
</div>
login.php
<?php session_start();
ob_start();
//Include database connection details
require_once('config.php');
//Array to store validation errors
$errmsg_arr = array();
//Validation error flag
$errflag = false;
//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
$str = @trim($str);
if(get_magic_quotes_gpc()) {
$str = stripslashes($str);
}
return mysql_real_escape_string($str);
}
//Sanitize the POST values
$username=$_POST['fname'];
$password=$_POST['password'];
//Input Validations
if($username == '') {
$errmsg_arr[] = 'Username missing';
$errflag = true;
}
if($password == '') {
$errmsg_arr[] = 'Password missing';
$errflag = true;
}
//If there are input validations, redirect back to the login form
if($errflag) {
$_SESSION['ERRMSG_ARR'] = $errmsg_arr;
session_write_close();
header("location:index.php");
exit();
}
//Create query
$qry=("SELECT * FROM user_detail WHERE password='$pass' AND fname='$user'") or die("Couldn't query the user-database.");
$result=mysql_query($qry);
//check whether the query was successful or not
if($result) {
if(mysql_num_rows($result) > 0) {
//Login Successful
$member = mysql_fetch_assoc($result);
$_SESSION['SESS_MEMBER_ID'] = $member['uid'];
$_SESSION['SESS_FIRST_NAME'] = $member['user_name'];
$_SESSION['SESS_LAST_NAME'] = $member['password'];
session_write_close();
header("location:index.php");
exit();
}else {
?>
注销.php
<?php session_start();
session_destroy();
location .......
?>
我在onclick事件中给了一个灯箱来登录。。我希望,如果用户通过该框登录,他/应该重定向到相同的索引页,&我可以用这个代码来显示他/她的名字,登录词应该隐藏起来,我想在那个地方放一个注销按钮。。在同一页上做这件事可能吗????
登录时使用:启动会话
session_start();
然后使用这个:
<div id="top_right_section">
<div id="head_icon">
<ul class="top">
<?php if(!isset($_SESSION)) { ?>
<li class="hover"><a href="#" onClick="revealModal('modalPage')">Login</a>
</li>
<?php } else {?>
<li class="hover"><a href="#">Logout</a>
</li>
<?php } ?>
<li><a href="registration.php" class="about">Registration</a>
</li>
</ul>
</div>
</div>
在使用查询检查凭据的情况下,如果凭据正确,请使用会话。
并且在注销时使用session_destroy();
销毁会话。
当然。您只需设置一个$_SESSION[]
变量,并在用户注销时销毁会话。如果设置了会话变量,则可以显示只应向登录用户显示的内容。
你可以在这里查看更多信息。
EDIT:示例:
<?php
session_start();
if(isset($_SESSION['logged_in'])) {
//Here Logout button
//If the button is clicked just do session_destroy() to unset $_SESSION variables
} else {
//Here Login Form
//If login correctly then set $_SESSION['logged_in'] = true;
}
?>
是的,很简单。。
登录所要做的就是设置一个会话变量来获取用户详细信息(比如表的主键)
像这样检查
if(isset($_SESSION['user_id'])){
Logout and so so on what you want
}else{
Login goes here
}