有没有比爆炸更有效的方法来获取电子邮件后缀？ （PHP） [英] Is there a more efficient way to get email suffix than explode? (PHP)

问题描述

我用来获取电子邮件后缀的当前代码

Current Code I'm using to get email suffix

$emailarray  = explode('@',$email_address);
$emailSuffix = $emailarray[1];

必须有一个更高效的功能。也许使用 substr（）？

There's gotta be a more efficient function. Maybe something using substr()?

推荐答案

更短：

$emailSuffix = end(explode('@', $email_address));

但是我认为它没有比这更有效的方法。正则表达式可能会更慢。

But I don't think it gets any significantly more efficient than that. Regex is probably slower.

我做了一些测试，尽管此版本比使用版本快3倍。

I did some testing and although this version was 3 times faster than using the

$a = explode('@', $email_address);
$foo = $a[1];

和

if (preg_match('~^.+@(.+)$~', $email_address, $reg))
  $foo = $reg[1];

它不符合 strict 标准：

严格标准：仅变量应通过引用传递

Strict Standards: Only variables should be passed by reference

EDIT2

EDIT2

$foo = substr($email_address, strpos($email_address, '@'));

大约与end（explode（。））方法一样快，所以我建议一个。请查看rayman86的答案和评论。

is about as fast as the end(explode(.)) method so I would suggest that one. Please see rayman86's answer and comments.

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