Php restrict emails

[ronbryce]

Pls, how do I make my registration page accept only one email address domain.

like john@test.com, peter@test.com?

[QuickOldCar]

Would be easier for us to see the code you are using now.

 

You can use the email filter

<?php
$email = "john@test.com, peter@test.com";
if(filter_var($email, FILTER_VALIDATE_EMAIL)){
    echo $email; 
}else{
    echo $email." Failed";
}
?>

Edited January 20, 2016 by QuickOldCar

[QuickOldCar]

If you want to use just the first one can do something like this.

<?php
$email = "john@test.com, peter@test.com";

if(strstr($email, ',')){
$exploded = explode(',',$email);
$email = trim($exploded[0]);	
}
if(filter_var($email, FILTER_VALIDATE_EMAIL)){
    echo $email; 
}else{
    echo $email." Failed";
}
?>

Edited January 20, 2016 by QuickOldCar

[QuickOldCar]

Don't forget to trim() the input, will fail the validation due to whitespace.

[Jacques1]

I think he wants to specifically restrict the domain of the addresses.

 

Of course the obvious approach would be to simply split at the “@” sign. Note, however, that you need to split at the rightmost “@”, because this symbol is also allowed as a literal character within the local part. For example, foo\@bar@example.com is a valid address.

<?php

$address = 'foo@example.com';
$host = substr(strrchr($address, '@'), 1);

var_dump( $host );

Alternatively, you could use an actual parser library. There are plenty on GitHub.