Email regex failing on certain email addresses

Question

I'm using this code to parse out emails from a string:

function get_emails ($str) {
    $pattern = '/([a-z0-9])(([-a-z0-9._])*([a-z0-9]))*\@([a-z0-9])' .
    '(([a-z0-9-])*([a-z0-9]))+' . '(\.([a-z0-9])([-a-z0-9_-])?([a-z0-9])+)/i';

    preg_match ($pattern, $str, $matches);

    return $matches;
}

It works well except when the address has more than one period in domain. So [email protected] works fine but [email protected] get's cut at [email protected]

What can I change to fix this?

Thanks!

If your email regex is less than a few thousand characters long, it's incorrect. — hobbs, Mar 25 '13 at 18:03
I found this on Stack Overflow somewhere. It works with multiple periods: `([A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4})` — David Starkey, Mar 25 '13 at 18:05
your also assuming names and domains are English! a-z Poor old Renée will be upset http://en.wikipedia.org/wiki/Internationalized_domain_name — Waygood, Mar 25 '13 at 18:06
http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address — pyInTheSky, Mar 25 '13 at 18:10

score 0 · Accepted Answer · answered Mar 25 '13 at 18:02

0

You could add a + before the end, i.e. +/i.

answered Mar 25 '13 at 18:02

MikeM

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Email regex failing on certain email addresses

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