[SOLVED] Sorting an array of emails by domain

[mikeg542]

Say I have a list of emails like so:

$emails = array('[email protected]','[email protected]','[email protected]','[email protected]');

 

And want it sorted to be in the order: [email protected], [email protected], [email protected], [email protected].

 

 

My idea was to assign an unchangable value to the two parts of each (as in , explode them based on @, assign a value to each pair, sort by the second part then attach the first part back on based on the matching values)

 

firstly, is this possible? and second, is it efficient for what I'm aiming for?

[omfgthezerg]

use sort()

http://www.php.net/sort

[mikeg542]

How would I use sort to only do it for the domain? I want:

 

[email protected] to come before [email protected]

[Mark Baker]

$emails = array('[email protected]','[email protected]','[email protected]','[email protected]','[email protected]','[email protected]','[email protected]');

echo 'Unsorted<br />';
print_r($emails);
echo '<br />';

function domainSort($a, $b) {
list($aMailbox,$aDomain) = explode('@',$a);
list($bMailbox,$bDomain) = explode('@',$b);

    if ($aDomain == $bDomain) {
    return ($aMailbox < $bMailbox) ? -1 : 1;
    }
    return ($aDomain < $bDomain) ? -1 : 1;
}

usort($emails,'domainSort');

echo 'Sorted<br />';
print_r($emails);

[mikeg542]

Thank you very much!