PHP中的反斜杠-是什么意思? [英] Backslash in PHP -- what does it mean?

问题描述

我刚刚看到在对PHP对象的引用中使用了反斜杠，对此感到很好奇(我以前从未见过).是什么意思?

I just saw the use of a backslash in a reference to a PHP object and was curious about it (I have never seen this before). What does it mean?

$mail = new SendGrid\Mail();

如果您感到好奇，请访问

If you're curious, here's SendGrid's documentation.

推荐答案

这是因为他们使用的是 PHP名称空间.自PHP 5.3起，命名空间是新的.

It's because they're using PHP namespaces. Namespaces are new as of PHP 5.3.

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