PHP - sleep() 以毫秒为单位
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PHP - sleep() in milliseconds
提问by Navaneeth Mohan
Does PHP provide a function to sleep in milliseconds?
Right now, I'm doing something similar to this, as a workaround.
PHP 是否提供以毫秒为单位休眠的函数？
现在，我正在做类似的事情，作为一种解决方法。
$ms = 10000;
$seconds = round($ms / 1000, 2);
sleep($seconds);
I'd like to know whether there is a more generic function that is available in PHP to do this, or a better way of handling this.
我想知道 PHP 中是否有更通用的函数可以做到这一点，或者有更好的方法来处理这个问题。
回答by Scuzzy
This is your only pratical alternative: usleep - Delay execution in microseconds
这是您唯一实用的选择：usleep - 以微秒为单位延迟执行
So to sleep for two miliseconds:
所以要休眠两毫秒：
usleep( 2 * 1000 );
To sleep for a quater of a second:
睡四分之一秒：
usleep( 250000 );
Note that sleep()works with integers, sleep(0.25)would execute as sleep(0)Meaning this function would finish immediatly.
请注意，sleep()适用于整数，sleep(0.25)将执行为sleep(0)意味着此函数将立即完成。
$i = 0;
while( $i < 5000 )
{
sleep(0.25);
echo '.';
$i++;
}
echo 'done';
