-
-
$start = array_sum(explode(' ', microtime()));
- for($i=0;$i strtotime("-1 day");
- }
-
- $end = array_sum(explode(' ', microtime()));
-
- echo $end - $start ;
- echo '
';
-
- $start = array_sum(explode(' ', microtime()));
-
- for($i=0;$i time() - 86400;
- }
-
- $end = array_sum(explode(' ', microtime()));
-
- echo $end - $start ;
- ?>
输出结果如下：
1.13611793518
0.00332498550415
效率相差400倍，的确差别很大，值得关注。
| 
