Question

我已经在PHP中创建了一个基本应用程序，并希望打印在页面末尾加载页面所需的时间。我首先用microtime定义开始，然后将它与最后的当前microtime进行比较，问题是输出类似于＆＃34; 0.000102＆＃34;而且我在几毫秒内寻找它，我猜这将是102毫秒？

定义开始，

define("START", microtime(true));

然后打印结束时间。

printf("Page was rendered in %f milliseconds", (microtime(true) - START));

但它仍然输出那可怕的长串。

Answer 1

毫秒为n*1000：

<?php
$start = microtime(true);

usleep(1000000);

$end = microtime(true) - $start;

printf("Page was rendered in %f seconds", $end);
printf("Page was rendered in %f milliseconds", $end*1000);
printf("Page was rendered in %f microseconds", ($end*1000)*1000);

https://3v4l.org/kHmA3

<强>结果：

Page was rendered in 1.000115 seconds
Page was rendered in 1000.115156 milliseconds
Page was rendered in 1000115.156174 microseconds

修改：如果您希望输出的值如0.10等，则需要将%f更改为%s并使用round()。

<?php
$start = microtime(true);

usleep(1000000);

$end = microtime(true) - $start;

printf("Page was rendered in %s seconds", round($end, 2));
printf("Page was rendered in %s milliseconds", round($end*1000, 2));
printf("Page was rendered in %s microseconds", round(($end*1000)*1000, 2));

https://3v4l.org/OfgJX

<强>结果：

Page was rendered in 1 seconds
Page was rendered in 1000.12 milliseconds
Page was rendered in 1000121.12 microseconds

用PHP加载的时间？

1 个答案: