PHP 变量插值与串联 [英] PHP variable interpolation vs concatenation

问题描述

以下两种方法(性能、可读性等)有什么区别，你更喜欢什么?

What is the difference between the two following methods (performance, readability, etc.) and what do you prefer?

echo "Welcome {$name}s!"

对比

echo "Welcome " . $name . "!";

推荐答案

最适合您的工作...但如果你想提高速度，请使用这个:

Whatever works best for you works... But if you want to go for speed use this:

echo 'Welcome ', $name, '!';

单引号告诉 PHP 不需要解释，逗号告诉 PHP 只回显字符串，不需要连接.

The single quotes tell PHP that no interpretation is needed, and the comma tells PHP to just echo the string, no concatenation needed.

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