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<?php $json = '{"result":{"0":["Adobe FrameMaker Document (.fm, .book)","application\/dca-rft"],"1":["Adobe Illustrator File (.ai)","application\/vnd.illustrator"],"2":["Adobe InDesign File (.indd)","application\/vnd.indesign"],"3":["Adobe Photoshop Document (.psd)","application\/vnd.photoshop"]}}'; $decoded = json_decode($json, true); $saneFormat = []; foreach ($decoded['result'] as $pair) { list($type, $mime) = $pair; $saneFormat[$mime] = $type; } var_dump($saneFormat);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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(4) { ["application/dca-rft"]=> string(38) "Adobe FrameMaker Document (.fm, .book)" ["application/vnd.illustrator"]=> string(28) "Adobe Illustrator File (.ai)" ["application/vnd.indesign"]=> string(27) "Adobe InDesign File (.indd)" ["application/vnd.photoshop"]=> string(31) "Adobe Photoshop Document (.psd)" }

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