CODEWITHSUNDEEP
phpemail
sdfgg45
sdfgg45

Reputation: 1242

Issue with validate email using PHP

I have the following code to check if user input is a valid email, there might be a few questions already about this but noone seems to validate the PHP function.

/* check if valid email*/
public function isValidEmail($email){
    if(filter_var($email, FILTER_VALIDATE_EMAIL)) {
        return true;
    }
    return false;
}

If we do a test using this function:

isValidEmail('[email protected]')

This should return false because characters like ?= are inside the email address. Is there a stricter way to check email?

Upvotes: 0

Views: 135

Answers (1)

Machavity
Machavity

Reputation: 31624

The problem here is that ? and = are perfectly valid for an email address. From Wikipedia on the RFC controlling email addresses

The local-part of the email address may use any of these ASCII characters:
These special characters: !#$%&'*+-/=?^_`{|}~ (ASCII: 33, 35–39, 42, 43, 45, 47, 61, 63, 94–96, 123–126)

If you're trying to make sure the email address actually exists, just be aware that that path is very difficult

Upvotes: 2

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