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@ 2015-05-07T03:43:55Z

<?php

$lookup = ['newsletter' => 'mrktg', 'solus' => 'sponsor'];
$profileSubscriptions = ['newsletter', 'solus'];

$lists = array_map( function($key) use($lookup) {
            return $lookup[$key];
        }, $profileSubscriptions );
        
var_dump($lists);

Output
Performance
VLD
References
Branches

array_map: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

35.17 ms | 402 KiB | 5 Q