php - PHP register_shutdown_function 1秒延迟

Question

我想弄清楚为什么php需要1整秒钟来执行register_shutdown_function。如果有办法克服的话。

<?php

$start_time = microtime(true);

function shutdown($start_time)
{
    $time_diff = round(1000 * (microtime(true)-$start_time));
    echo $time_diff . "ms<br/>";
}

register_shutdown_function('shutdown', $start_time);
register_shutdown_function('shutdown', $start_time);
register_shutdown_function('shutdown', $start_time);
register_shutdown_function('shutdown', $start_time);
register_shutdown_function('shutdown', $start_time);

输出：

1001ms
2001ms
3003ms
4003ms
5003ms

在windows/php上运行xampp 1.6.8:5.2.6

Answer 1

您的问题有一个正确答案https://stackoverflow.com/a/19273025/341260