如何创建会话变量并显示另一个页面

Question

在index.php中我在jQuery中设置了一个会话变量，在这个页面中我得到了我的令牌ID，但是我想在另一个页面中显示它，比如home.php。所以我在home.php页面

var val = $.session.get('Token');
    alert(); //**getting here undefined**.how can solve this issue please tell me any one

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(function($){

    $.session = {

        _id: null,

        _cookieCache: undefined,

        _init: function()
        {
            if (!window.name) {
                window.name = Math.random();
            }
            this._id = window.name;
            this._initCache();

            // See if we've changed protcols

            var matches = (new RegExp(this._generatePrefix() + "=([^;]+);")).exec(document.cookie);
            if (matches && document.location.protocol !== matches[1]) {
               this._clearSession();
               for (var key in this._cookieCache) {
                   try {
                   window.sessionStorage.setItem(key, this._cookieCache[key]);
                   } catch (e) {};
               }
            }

            document.cookie = this._generatePrefix() + "=" + document.location.protocol + ';path=/;expires=' + (new Date((new Date).getTime() + 120000)).toUTCString();

        },

        _generatePrefix: function()
        {
            return '__session:' + this._id + ':';
        },

        _initCache: function()
        {
            var cookies = document.cookie.split(';');
            this._cookieCache = {};
            for (var i in cookies) {
                var kv = cookies[i].split('=');
                if ((new RegExp(this._generatePrefix() + '.+')).test(kv[0]) && kv[1]) {
                    this._cookieCache[kv[0].split(':', 3)[2]] = kv[1];
                }
            }
        },

        _setFallback: function(key, value, onceOnly)
        {
            var cookie = this._generatePrefix() + key + "=" + value + "; path=/";
            if (onceOnly) {
                cookie += "; expires=" + (new Date(Date.now() + 120000)).toUTCString();
            }
            document.cookie = cookie;
            this._cookieCache[key] = value;
            return this;
        },

        _getFallback: function(key)
        {
            if (!this._cookieCache) {
                this._initCache();
            }
            return this._cookieCache[key];
        },

        _clearFallback: function()
        {
            for (var i in this._cookieCache) {
                document.cookie = this._generatePrefix() + i + '=; path=/; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
            }
            this._cookieCache = {};
        },

        _deleteFallback: function(key)
        {
            document.cookie = this._generatePrefix() + key + '=; path=/; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
            delete this._cookieCache[key];
        },

        get: function(key)
        {
            return window.sessionStorage.getItem(key) || this._getFallback(key);
        },

        set: function(key, value, onceOnly)
        {
            try {
                window.sessionStorage.setItem(key, value);
            } catch (e) {}
            this._setFallback(key, value, onceOnly || false);
            return this;
        },
        
        'delete': function(key){
            return this.remove(key);
        },

        remove: function(key)
        {
            try {
            window.sessionStorage.removeItem(key);
            } catch (e) {};
            this._deleteFallback(key);
            return this;
        },

        _clearSession: function()
        {
          try {
                window.sessionStorage.clear();
            } catch (e) {
                for (var i in window.sessionStorage) {
                    window.sessionStorage.removeItem(i);
                }
            }
        },

        clear: function()
        {
            this._clearSession();
            this._clearFallback();
            return this;
        }

    };

    $.session._init();

})(jQuery);
 
// Here i am set session variable

$.session.set('Token',"1") ;
var get_session_name =$.session.get('Token');
 alert(get_session_name);

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

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Answer 1

你可以在一个文件（header.php）中创建你的会话变量，该文件应该包含在每个其他文件中（在这种情况下是home.php）

所以，像这样创建会话

的header.php

<?php
    session_start();
    if (isset($_SESSION['username'])) {
      // session already exists
        echo "User ID:", $_SESSION['id'], "<br />"
    } else {
        // New PHP Session

        $_SESSION['username'] = "loginprocess";
        $_SESSION['id'] = 444;
    }
?>

可能是home.php

<?php require "header.php"; ?>
 <!doctype html>
 <head></head>
 <body>
 <?php
     if (isset($_SESSION["username"])) {
         $loggenOnUser = $_SESSION["username"];
         echo "Existing User: ", $loggenOnUser, "<br />"
     } else {
         $loggenOnUser = " new user";
     }
 ?>
     ...
         <div id="LoggedInUser" class="fluid ">
             Hi.  I'm <?php echo $loggenOnUser; ?> 
         </div>

修改

尝试将会话初始化代码移动到header.php或footer.php，并在每个其他php页面中包含页眉和页脚，这样就可以访问每个页面中的会话变量。

在home.php之类的其他页面中包含header和footer.php，如：

<?php require "header.php"; ?>
.
.
//Body
.
.
<?php require "footer.php"; ?>