串联，多个参数还是sprintf? [英] Concatenation, multiple parameters or sprintf?

问题描述

我正在优化我的PHP代码，发现您可以通过以下方式加快回显-确切的说，您可以将echo "The name of the user is $name" . ".";替换为:

I am working to optimize my PHP code and found out that you can speed up echoing in these ways - exactly, you can replace echo "The name of the user is $name" . "."; with:

• echo 'The name of the user is '.$name.'.';
• echo "The name of the user is", $name, ".";
• echo sprintf("The name of the user is %s", $name);

• echo 'The name of the user is '.$name.'.';
• echo "The name of the user is", $name, ".";
• echo sprintf("The name of the user is %s", $name);

哪个是最快的?我不仅希望看到基准测试，还希望获得一些技术上的解释.

Which one is the fastest? I'd like not only to see benchmarks, but also some technical explaination, if possible.

推荐答案

首先，这是微优化，您最好为更快的服务器付费并开发更多产品，然后再花费数小时的微优化.但是，根据 http://micro-optimization.com/，以下是结果:

Firstly, this is micro optimization and you're probably better paying for a faster server and developing more product then spending hours and hours micro optimizing. However according to http://micro-optimization.com/ here are the results:

sprintf()比双引号慢138.68％(慢1.4倍)

sprintf() is slower than double quotes by 138.68% (1.4 times slower)

和

sprintf()比单引号慢163.72％(慢1.6倍)

sprintf() is slower than single quotes by 163.72% (1.6 times slower)

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