PHP如何获取用户每次操作的HTTP 请求的唯一性的request id 呢?
无论多少人,要求每次点击 都是全局唯一的ID
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PHP如何获取用户每次操作的HTTP 请求的唯一性的request id 呢?
无论多少人,要求每次点击 都是全局唯一的ID
每次一个请求过来,你都生成唯一的 id,可以作为这个 request 的唯一 id,可以使用 uuid
or guid
等
你好,LZ:
看到你的问题,我首先想到的是主键id的概念, 它可以唯一标识每条记录。所以楼主的需求就是要找到一个递增id,用于标识每一个请求。
<code>方案一:(利用PHP内置全局变量$_SERVER中的参数REQUEST_TIME) <?php date_default_timezone_set('PRC'); sleep(5); echo date('Y-m-d H:i:s',time()); //获取当前系统的时间戳 echo '<hr/>'; echo date('Y-m-d H:i:s', $_SERVER['REQUEST_TIME']);//获取本次请求的开始时间 </code>
输出结果:
<code>2016-04-05 11:27:06 2016-04-05 11:27:01 //请求时间,与休眠后输出date相差5秒,符合预期 </code>
注:如果请求量巨大,秒级别无法标识,可以用REQUEST_TIME_FLOAT参数,可以精确到微秒级。
方案二: 利用php内置函数uniqid() ,生成唯一id。 或者这样子来生成: md5(time()).mt_rand(1,1000)
<code><?php echo $_SERVER['REQUEST_TIME_FLOAT'];</code></code>
phpsessid
1,开启session,$sid = session_id();
2.获取当前请求的时间 $rid = $_SERVER['REQUEST_TIME_FLOAT']
3.唯一请求等于 $unqidId = md5($sid . $rid)
//(如果还觉得不可靠再加个随机数)

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