time_sleep_until
(PHP 5 >= 5.1.0RC1)
time_sleep_until --
Make the script sleep until the specified time
说明
bool
time_sleep_until ( float timestamp )
Makes the script sleep until the specified
timestamp
.
参数
timestamp
The timestamp when the script should wake.
返回值
如果成功则返回 TRUE,失败则返回 FALSE。
错误/异常
If the specified timestamp
is in the past, this
function will generate a E_WARNING.
范例
例 1. A time_sleep_until() example
<?php
//returns false and generates a warning var_dump(time_sleep_until(time()-1));
// may only work on faster computers, will sleep up to 0.2 seconds var_dump(time_sleep_until(time()+0.2));
?>
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注释
注意:
All signals will be delivered after the script wakes up.