分析 PHP 脚本的最简单方法 [英] Simplest way to profile a PHP script
问题描述
分析 PHP 脚本的最简单方法是什么?
What's the easiest way to profile a PHP script?
我很想添加一些东西,向我展示所有函数调用的转储以及它们花费的时间,但我也可以围绕特定函数放置一些东西.
I'd love tacking something on that shows me a dump of all function calls and how long they took but I'm also OK with putting something around specific functions.
我尝试使用 microtime 功能:
$then = microtime();
myFunc();
$now = microtime();
echo sprintf("Elapsed: %f", $now-$then);
但这有时会给我负面的结果.另外,把它洒在我的代码中很麻烦.
but that sometimes gives me negative results. Plus it's a lot of trouble to sprinkle that all over my code.
推荐答案
PECL APD 扩展是用法如下:
<?php
apd_set_pprof_trace();
//rest of the script
?>
之后,使用pprofp
解析生成的文件.
After, parse the generated file using pprofp
.
示例输出:
Trace for /home/dan/testapd.php
Total Elapsed Time = 0.00
Total System Time = 0.00
Total User Time = 0.00
Real User System secs/ cumm
%Time (excl/cumm) (excl/cumm) (excl/cumm) Calls call s/call Memory Usage Name
--------------------------------------------------------------------------------------
100.0 0.00 0.00 0.00 0.00 0.00 0.00 1 0.0000 0.0009 0 main
56.9 0.00 0.00 0.00 0.00 0.00 0.00 1 0.0005 0.0005 0 apd_set_pprof_trace
28.0 0.00 0.00 0.00 0.00 0.00 0.00 10 0.0000 0.0000 0 preg_replace
14.3 0.00 0.00 0.00 0.00 0.00 0.00 10 0.0000 0.0000 0 str_replace
警告:APD 的最新版本发布于 2004 年,扩展名 不再维护 并且有各种兼容性问题(请参阅评论).
Warning: the latest release of APD is dated 2004, the extension is no longer maintained and has various compability issues (see comments).
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