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<?php $values = array('a'=>1, 'b'=>2, 'c'=>3); $revisions = array('b'=>4, 'c'=>5, 'd'=>6); $fees = array(); foreach(array_keys($values + $revisions) as $key){ if(array_key_exists($key, $values) && array_key_exists($key, $revisions)){ $fees[$key] = $values[$key] + $revisions[$key]; } elseif(array_key_exists($key, $values)){ $fees[$key] = $values[$key]; } elseif(array_key_exists($key, $revisions)){ $fees[$key] = $revisions[$key]; } } print_r($fees);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [a] => 1 [b] => 6 [c] => 8 [d] => 6 )

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