PHP 時間的加減
liang | 2010-02-22 15:38:26 | PHP
time()
可以取得以秒表示的時間.
$start_time=time();
$end_time=time();
echo $end_time-$start_time;
microtime()
可以取到微秒
list($start_usec, $start_sec) = explode(" ", microtime());
list($end_usec, $end_sec) = explode(" ", microtime());
$sec=$end_sec-$start_sec;
$used=$end_usec-$start_usec;
echo $sec+$usec;
http://tw.php.net/manual/en/function.microtime.php
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