Regular Expressions on PHP remove url from an email string

Question

I'm uploading Tab Delimited text files exported from Excel, basically i'm getting all email fields on the document, by using a preg_match_all

preg_match_all("/([\s]*)[\._a-zA-Z0-9-]+@[\._a-zA-Z0-9-]+/i",$string,$emails);

In some cases emails are saved with a url attached to it like this: prefix.user@domain.comwww.domain.com

i need to strip only the email without the url that's afterwards the email address

how can i make this work using regular expressions??

Answer 1

List all possible domain names in last regexp group like this, including top-level domains by default.

[A-Z0-9._%+-]+@[A-Z0-9.-]+\.(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)

You can read more about email validation here or read the related question here .

UPDATE

Expression conforming to RFC 2822 standard

[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[a-zA-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)