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<?php $array1 = ['code1' => 1, 'code2' => 2]; $array2 = ['code1' => 0, 'code2' => 2, 'code3' => 3]; $all_keys = array_unique(array_merge(array_keys($array1), array_keys($array2))); $output = array(); foreach ($all_keys as $code) { $output[$code] = (!empty($array2[$code]) ? $array2[$code] : 0) - (!empty($array1[$code]) ? $array1[$code] : 0); } print_r($output);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [code1] => -1 [code2] => 0 [code3] => 3 )

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