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<?php $array = [ ['SC1MTTCS6J1WK'], ['SC1MTTCSHJ1WK'] ]; $it = new RecursiveIteratorIterator(new RecursiveArrayIterator($array)); $flat = []; foreach($it as $value) { $flat[] = $value; } echo implode(', ', $flat);
Output for git.master, git.master_jit, rfc.property-hooks
SC1MTTCS6J1WK, SC1MTTCSHJ1WK

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