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<?php $tags = array('utm_source', 'utm_medium', 'utm_campaign'); foreach ($tags as $tag){ $results[] = $tag; } print_r($results);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => utm_source [1] => utm_medium [2] => utm_campaign )