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<?php $array = array( 'Google', 'Facebook', 'Twitters', 'Slack', 'Twilio', ); $r = null; array_walk($array, function($v, $k) use (&$r){ $r[$v] = strlen($v); }); echo array_search(max($r), $r);
Output for git.master, git.master_jit, rfc.property-hooks
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