PHP性能 [英] PHP performance

问题描述

如何在不在服务器上安装软件的情况下提高PHP脚本的性能/速度?

What can I do to increase the performance/speed of my PHP scripts without installing software on my servers?

推荐答案

配置文件.轮廓.轮廓.我不确定是否有PHP可用的东西，但是编写一个小工具以在代码中插入概要分析信息应该很简单.您将需要分析函数时间和SQL查询时间.

Profile. Profile. Profile. I'm not sure if there is anything out there for PHP, but it should be simple to write a little tool to insert profiling information in your code. You will want to profile function times and SQL query times.

那么在哪里有功能:

function foo($stuff) {
    ...
    return ...;
}

我将其更改为:

function foo($stuff) {
    trace_push_fn('foo');
    ...
    trace_pop_fn('foo');
    return ...;
}

(这是函数中多次返回成为障碍的情况之一.)

(This is one of those cases where multiple returns in a function become a hinderance.)

和SQL:

function bar($stuff) {
    trace_push_fn('bar');

    $query = ...;
    trace_push_sql($query);
    mysql_query($query);
    trace_pop_sql($query);

    trace_pop_fn('bar');
    return ...;
}

最后，您可以生成程序执行的完整跟踪，并使用各种技术来识别瓶颈.

In the end, you can generate a full trace of the program execution and use all sorts of techniques to identify your bottlenecks.

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