论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业

<h3 id="简介" style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;简介</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在php.ini中存在三项配置项：</p><p><img src="/Public/forum/ueditor/image/20171026/1508982408199072.png" title="1508982408199072.png" alt="image.png"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;以上的选项就是与PHP中的Session存储和序列话存储有关的选项。<br/>在使用xampp组件安装中，上述的配置项的设置如下：</p><p><img src="/Public/forum/ueditor/image/20171026/1508982744181306.png" title="1508982744181306.png" alt="image.png"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在上述的配置中，<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">session.serialize_handler</code>是用来设置session的序列话引擎的，除了默认的PHP引擎之外，还存在其他引擎，不同的引擎所对应的session的存储方式不相同。</p><ul class=" list-paddingleft-2" style="list-style-type: disc;"><li><p>php_binary:存储方式是，键名的长度对应的ASCII字符+键名+经过serialize()函数序列化处理的值</p></li><li><p>php:存储方式是，键名+竖线+经过serialize()函数序列处理的值</p></li><li><p>php_serialize(php&gt;5.5.4):存储方式是，经过serialize()函数序列化处理的值</p></li></ul><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在PHP中默认使用的是PHP引擎，如果要修改为其他的引擎，只需要添加代码<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">ini_set(&#39;session.serialize_handler&#39;, &#39;需要设置的引擎&#39;);</code>。示例代码如下：</p><p><img src="/Public/forum/ueditor/image/20171026/1508982768661496.png" title="1508982768661496.png" alt="image.png"/></p><h3 id="存储机制" style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-stretch: normal; line-height: 30px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;存储机制</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;php中的session中的内容并不是放在内存中的，而是以文件的方式来存储的，存储方式就是由配置项<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">session.save_handler</code>来进行确定的，默认是以文件的方式存储。<br/>存储的文件是以<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">sess_sessionid</code>来进行命名的，文件的内容就是session值的序列话之后的内容。<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;假设我们的环境是xampp，那么默认配置如上所述。<br/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在默认配置情况下：</p><p><img src="/Public/forum/ueditor/image/20171026/1508982962785495.png" title="1508982962785495.png" alt="image.png"/><img src="/Public/forum/ueditor/image/20171026/1508983579605914.png" title="1508983579605914.png" alt="image.png"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;可以看到PHPSESSID的值是<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">jo86ud4jfvu81mbg28sl2s56c2</code>，而在<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">xampp/tmp</code>下存储的文件名是<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">sess_jo86ud4jfvu81mbg28sl2s56c2</code>，文件的内容是<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">name|s:6:&quot;spoock&quot;;</code>。name是键值，<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">s:6:&quot;spoock&quot;;</code>是<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace;">serialize(&quot;spoock&quot;)</code>的结果。</p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在php_serialize引擎下：</p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20171026/1508983601492569.png" title="1508983601492569.png" alt="image.png"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SESSION文件的内容是</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">names:6:&quot;spoock&quot;;</code><span style="color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">。由于</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">name</code><span style="color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">的长度是4，4在ASCII表中对应的就是</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">EOT</code><span style="color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">。根据php_binary的存储规则，最后就是</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, &quot;Andale Mono&quot;, &quot;DejaVu Sans Mono&quot;, monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">names:6:&quot;spoock&quot;;</code><span style="color: rgb(46, 46, 46); font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">。(突然发现ASCII的值为4的字符无法在网页上面显示，这个大家自行去查ASCII表吧)</span></p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/></p>

论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业