PHP正则表达式 - 在两个字符之间找到（保留最后一个字符）

Question

Trying to help grab unique emails for a contest and have a few people using the gmail + symbol trick to get around it. I'm trying to get a clean way to filter the email so it removes everything in between the + and @ symbol so that:

[e-mail]

becomes:

[e-mail]

So far I have:

\+(.*?)\@

which removes the + and @ symbols. Is there a way (and I'm sure there is) to tell regex to keep the @ character so I don't need to re-add it, replace it, or some other trick?

http://regex101.com/r/zM8sT3

Answer 1

You can use this:

\+[^@]+(?=@)

(?=@) is a lookahead assertion (its only a check) and means followed by @