Returns three samples representing the average system load
(the number of processes in the system run queue) over the last 1, 5 and 15
minutes, respectively.
返回值
Returns an array with three samples (last 1, 5 and 15
minutes).
范例
例 1. A sys_getloadavg() example
<?php
$load = sys_getloadavg();
if ($load[0] > 80) {
header('HTTP/1.1 503 Too busy, try again later');
die('Server too busy. Please try again later.');
}
?>
