another regex email post (in php)

Question

Im handling various email addresses that come in the following forms

John Doe <[email protected]>
[email protected]

How could i use regex, to find the @ symbol, and then return the integer's behind it (until it doesnt find anymore, or runs into a non number, < or space for example.)

Answer 1

Just search for this regex:

(\d*)@

And then look at the first capture group.

Answer 2

/^\D*(\d*)@/

Will match any number of non-digits, any number of digits, followed by an @.

The capturing group will contain the digits.

Answer 3

You could try something like...

preg_match("#^[\D]+\<([\d]+)#", "John Doe <[email protected]>", $matches);