PHP获取毫秒时间戳，php获取毫秒
我们知道,PHP中time()函数获取的时间戳,其单位是秒.
但是,前端JS获取的时间戳,单位是毫秒. 那么,在实际应用中,如何将JS和PHP的时间戳统一,即如何使用PHP获取毫秒时间戳呢,请看下例:php
//函数,获取毫秒时间戳
function getMillisecond() {
list($t1, $t2) = explode(' ', microtime());
return (float)sprintf('%.0f', (floatval($t1) + floatval($t2)) * 1000);
}
//上面的函数是百度出来的,我刚开始看着也不是很明白.
//现分开详细讲解如下:
function getMillisecond_new(){
//使用microtime()获取微秒时间戳,格式(中间空格隔开):'秒的小数部分 秒的整数部分',例如'0.69718900 1420440552'
//将微秒字符串explode炸开,接收$t1=0.69718900 $t2=1420440552
list($t1, $t2) = explode(' ', microtime());
//转成浮点数
$t1=floatval($t1);
$t2=floatval($t2);
//相加×1000
$total=( $t1+ $t2) * 1000;
//四舍五入
$total=round($total,0);
//返回结果
return $total;
}
echo getMillisecond()," PHP毫秒-getMillisecond()
";
echo getMillisecond_new().' PHP毫秒-getMillisecond_new()';
/*
* 思路:
* 1.使用microtime()获取微秒时间戳,格式:0.69718900 1420440552
* 2.前后两部分相加×1000,然后四舍五入round($float,0)
* 秒time()-->毫秒-->微秒microtime(),两两之间是1000进制
* 这样,就可以与前端JS的时间戳保持一致
* JS : new Date().getTime()获得毫秒时间戳
*/
?>
DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-equiv="Content-Type" content="text/html; charset=utf-8">
<span class="pln">time<<span class="pun">/<span class="pln">title</span></span></span></span></code>>
<code class="language-php"><span class="pun"></<span class="pln">head</span></span></code>>
<code class="language-php"><span class="pln"><body</span></code>>
<code class="language-php"><span class="pln"><br <span class="pun">/</span></span></code>>
<code class="language-php"><span class="pln"><script</span></code>>
<code class="language-php"><span class="kwd">var<span class="pln"> time<span class="pun">=<span class="kwd">new<span class="pln"> <span class="typ">Date<span class="pun">();</span></span></span></span></span></span></span></code>
<code class="language-php"><span class="kwd">var<span class="pln"> mtime<span class="pun">=<span class="pln">time<span class="pun">.<span class="pln">getTime<span class="pun">();</span></span></span></span></span></span></span></code>
<code class="language-php"><span class="pln">document<span class="pun">.<span class="pln">write<span class="pun">(<span class="pln">mtime<span class="pun">+<span class="str">' JS获得毫秒时间戳'<span class="pun">);</span></span></span></span></span></span></span></span></code>
<code class="language-php"><span class="pun"></<span class="pln">script</span></span></code>>
<code class="language-php"><span class="pun"></<span class="pln">body</span></span></code>>
<code class="language-php"><span class="pun"></<span class="pln">html</span></span></code>>
运行结果如下:
<code class="language-php"><span class="lit">1424069168633<span class="pln"> PHP毫<span class="pun">秒-<span class="pln">getMillisecond<span class="pun">()</span></span></span></span></span></code>
<code class="language-php"><span class="lit">1424069168633<span class="pln"> PHP毫<span class="pun">秒-<span class="pln">getMillisecond_new<span class="pun">()</span></span></span></span></span></code>
<code class="language-php"><span class="lit">1424069168643<span class="pln"> JS<span class="pun">获得毫秒时间戳</span></span></span></code>
可以看出,第三个时间戳数值稍微比前两个大,这是代码运行所消耗的时间,是正常的.</p>
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