跟踪PHP中的脚本执行时间 [英] Tracking the script execution time in PHP

问题描述

PHP必须跟踪特定脚本使用的CPU时间，以强制执行max_execution_time限制.

PHP must track the amount of CPU time a particular script has used in order to enforce the max_execution_time limit.

有没有办法在脚本中访问此内容?我想在测试中包括一些日志，以记录实际PHP中的CPU消耗了多少(脚本坐着并等待数据库时，时间没有增加).

Is there a way to get access to this inside of the script? I'd like to include some logging with my tests about how much CPU was burnt in the actual PHP (the time is not incremented when the script is sitting and waiting for the database).

我正在使用Linux机器.

I am using a Linux box.

推荐答案

在unixoid系统上(以及Windows的php 7+中)，您可以使用获取，例如:

On unixoid systems (and in php 7+ on Windows as well), you can use getrusage, like:

// Script start
$rustart = getrusage();

// Code ...

// Script end
function rutime($ru, $rus, $index) {
    return ($ru["ru_$index.tv_sec"]*1000 + intval($ru["ru_$index.tv_usec"]/1000))
     -  ($rus["ru_$index.tv_sec"]*1000 + intval($rus["ru_$index.tv_usec"]/1000));
}

$ru = getrusage();
echo "This process used " . rutime($ru, $rustart, "utime") .
    " ms for its computations\n";
echo "It spent " . rutime($ru, $rustart, "stime") .
    " ms in system calls\n";

请注意，如果您为每个测试生成一个php实例，则无需计算差异.

Note that you don't need to calculate a difference if you are spawning a php instance for every test.

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