Regex For A Specific Email Address "@shrewsbury.ac.uk"

[jbonnett]

I'm hoping someone can help me I only want to accept "@shrewsbury.ac.uk" email addresses so a full email would be something like "[email protected]" with regex I know my normal email regex one is

$regex = "^[_+a-z0-9-]+(\.[_+a-z0-9-]+)*"
."@[a-z0-9-]+(\.[a-z0-9-]{1,})*"
."\.([a-z]{2,}){1}$";

I'm rubbish with regex so please help me.....

[premiso]

I don't think you would want to use regex in the way you intended, since we know what the domain portion needs to be let's match that exactly. So I would check that the string ends in the @shrewbury.ac.uk and then use the built in email filter, filter_var to make sure the email is valid.

 

<?php

if (preg_match('#.*@shrewsbury.ac.uk$#i', $email) && filter_var($email, FILTER_VALIDATE_EMAIL) !== false) {
     echo 'Valid email, yay!';
}else {
     echo 'Invalid email boo!';
}

[jbonnett]

I don't think you would want to use regex in the way you intended, since we know what the domain portion needs to be let's match that exactly. So I would check that the string ends in the @shrewbury.ac.uk and then use the built in email filter, filter_var to make sure the email is valid.

 

<?php

if (preg_match('#.*@shrewsbury.ac.uk$#i', $email) && filter_var($email, FILTER_VALIDATE_EMAIL) !== false) {
echo 'Valid email, yay!';
}else {
echo 'Invalid email boo!';
}

 

I have to integrate it with the old code.

[Jessica]

And?

[premiso]

<?php

$regex = "^[_+a-z0-9-]+(\.[_+a-z0-9-]+)*"
."@shrewsbury.ac.uk$";

 

Ok.

[jbonnett]

Thank you work perfectly

[Christian F.]

You need to escape the periods that are a part of the domain, otherwise they'll be read as a RegExp meta character (match all except newlines).