我有一个php脚本,我通过ajax调用初始化用户登录的会话变量。当我稍后检索会话信息时,似乎并不存在。这是缺少的。我必须说我假设$ _SESSION变量在那里。我以前没有这样做过。用户用php/javascript登录
PHP代码,在数据库中搜索用户,并初始化会话变量
while (true) {
$md5_pw = md5($password_text);
$r_getuser = mysql_query("SELECT * FROM users WHERE (user_name = BINARY '".mysql_real_escape_string($l_un_em)."' OR email = '".mysql_real_escape_string($l_un_em)."') AND (password = '$md5_pw' OR temp_password = '$md5_pw') AND status >= 0");
if (mysql_num_rows($r_getuser) == 0) {
/* echo $messages['log_un_em_pw_incorrect'];
return; */
$return['return_code'] = -1;
$return['return_msg'] = $messages['log_un_em_pw_incorrect'];
echo json_encode($return);
}
$row = mysql_fetch_assoc($r_getuser);
/* if ($row['privs'] < 1) { echo $messages['log_no_privs']; break; } */
if ($row['temp_password'] == $md5_pw) { //new password
mysql_query("UPDATE users SET password = '".$md5_pw."', temp_password = NULL WHERE user_id = '{$row['user_id']}'");
}
$today = date('Y-m-d');
if ($row['login_0'][0] == '9') { //first login
mysql_query("UPDATE users SET login_0 = '".$today."', login_1 = '".$today."', login_cnt = 1 WHERE user_id = '{$row['user_id']}'");
} else {
mysql_query("UPDATE users SET login_1 = '".$today."', login_cnt = login_cnt+1 WHERE user_id = '{$row['user_id']}'");
}
$_SESSION['uid'] = $row['user_id'];
$_SESSION['unm'] = stripslashes($row['user_name']);
$_SESSION['uml'] = stripslashes($row['email']);
$_SESSION['cL'] = $row['language'];
/* echo '<meta http-equiv="refresh" content="0;url=livemass_CENTER34.php">'; */ //default page
break;
}
PHP代码来检索会话变量。
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
echo 'user id '.$_SESSION['uid'].'<br/>';
echo 'username '.$_SESSION['unm'].'<br/>';
echo 'uml '.$_SESSION['uml'].'<br/>';
echo 'cL '.$_SESSION['cL'].'<br/>';
?>
显示会话信息的Javascript。
$.ajax({
url: "get_session_info.php",
type: "GET",
data: {},
cache: false,
async: false,
success: function (response) {
alert ('session info response <br/>'+response);
},
});
我看不到'session_start();'在任何地方? – Halcyon 2012-04-21 16:06:07
请发布整个php代码而不是片段..你确定你添加了session_start()?它应该被添加到每一页上你打算使用$ _SESSION – arijeet 2012-04-21 16:08:01
请停止用古老的'mysql_ *'函数编写新代码。他们不再被维护,社区已经开始[弃用流程](http://news.php.net/php.internals/53799)。相反,您应该了解[准备好的陈述](http://en.wikipedia.org/wiki/Prepared_statement)并使用[PDO](http://php.net/pdo)或[MySQLi](http:// php.net/mysql)。如果你关心学习,[这里](http://wiki.hashphp.org/PDO_Tutorial_for_MySQL_Developers)是一个相当不错的PDO相关教程。 – 2012-04-21 16:08:38