CODEWITHSUNDEEP
phpregexvalidationpreg-matchemail-validation
Sam Granger
Sam Granger

Reputation: 411

Regex email - how to allow plus symbols in email?

I always find regular expressions a headache, and googling didn't really help. I'm currently using the following expression (preg_match): /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/

However, if I'd want to allow emails with plus symbols, this obviously won't work, eg: [email protected]

How would I need to change my expression to allow it? Thanks in advance for all the help!

Upvotes: 5

Views: 5629

Answers (3)

mario
mario

Reputation: 145482

You should just use PHPs builtin regex for email validation, because it covers all the things:

filter_var($email, FILTER_VALIDATE_EMAIL)

See filter_var and FILTER_VALIDATE_EMAIL (or https://github.com/php/php-src/blob/master/ext/filter/logical_filters.c#L499 for the actual beast).

Upvotes: 10

FailedDev
FailedDev

Reputation: 26930

Your wrong regex can be changed to another wrong regex:

/^[\w-]+(\.[\w+-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/

which allows for the + character where you want it. But it's wrong anyway.

Upvotes: 7

Paulo H.
Paulo H.

Reputation: 1258

Try add \+ into the char collection [] :

/^[_a-z0-9-]+(.[_a-z0-9-\+]+)@[a-z0-9-]+(.[a-z0-9-]+)(.[a-z]{2,3})$/

Upvotes: 1

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