代码:

<?php
list($msec, $sec) = explode(' ', microtime());
$msectime = (float)sprintf('%.0f', (floatval($msec) + floatval($sec)) * 1000);
echo $msectime; ?>

输出:

1555923393483

封装成一个方法:

public static function msectime()
{
list($msec, $sec) = explode(' ', microtime()); return (float)sprintf('%.0f', (floatval($msec) + floatval($sec)) * 1000);
}
05-11 13:39