ansaurus

Question

PHP code for checking email says .info domains are invalid

Answer 1

A:

To just allow .info as well:

if (eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@([0-9a-z][0-9a-z-]*[0-9a-z]\.)+[a-z]{2}[mtgvu]?(fo)?$", $email))

(added optional 'fo' to end)

mwalker 2010-07-21 00:20:45

It's `[mtgvuo]?`, so the last character is optional, which means it would work for country codes.

casablanca 2010-07-21 00:23:42

true... it's the [a-z]{2}[mtgvu]? that limits it to three characters. So country codes fit in the [a-z]...

mwalker 2010-07-21 00:27:05

Ah. no .museum? And ICANN was thinking about selling new arbitrary TLD's a while back, I don't know how far along they are with that.

Wrikken 2010-07-21 00:29:19

I think casablanca's fo-fu is cleaner.

mwalker 2010-07-21 00:31:26

Answer 2

+2 A:

Use:

if(filter_var($email, FILTER_VALIDATE_EMAIL)) echo 'yeey, valid';

If interested in the actual regex it uses: it's in the public php source ( http://gcov.php.net/PHP_5_3/lcov_html/filter/logical_filters.c.gcov.php, line 525)

Wrikken 2010-07-21 00:26:52

I want to allow PHP 4 support so I wont be able to use this. I've changed my code to preg_match("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@([0-9a-z][0-9a-z-]*[0-9a-z]\.)+[a-z]{2}([mtgvu]|fo)?$", $email, $matches);

Ben Sinclair 2010-07-22 00:19:31

In that case, why not expect the future to happen, use filter_var if available, and for consistency use the regex I pointed out to you?

Wrikken 2010-07-22 01:10:32

Answer 3

+1 A:

The [a-z]{2}[mtgvu]? at the end means that the top-level domain can only be two or three characters long. If you want a quick hack to make it accept info, you can change [mtgvu]? to ([mtgvu]|fo)?:

if (eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@([0-9a-z][0-9a-z-]*[0-9a-z]\.)+[a-z]{2}([mtgvu]|fo)?$", $email))
    return true;

casablanca 2010-07-21 00:29:10

Is there anyway to make it so any TLD is valid? this way when new ones come out, it will work.

Ben Sinclair 2010-07-22 00:20:21

Just replace this part at the end: `[a-z]{2}([mtgvu]|fo)?` with `[a-z][a-z]+` - this will match any TLD that is 2 or more characters. Or if you want to restrict it to at most 4 characters, use `[a-z]{2,4}`.

casablanca 2010-07-22 02:10:53

Answer 4

A:

Please consider using a more RFC-compliant email parser, like this one from Dominic Sayers, or this one from Cal Henderson of Flickr.

Charles 2010-07-21 01:47:57

ansaurus

tags:

views:

answers:

PHP code for checking email says .info domains are invalid

related questions