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<?php $items = [ ['ID' => 420, 'name' => 'Mary'], ['ID' => 10957, 'name' => 'Blah'] ]; $result = array_column($items, 'name', 'ID'); print_r($result); $result = array_column($items, null, 'ID'); print_r($result); $result = array_reduce($items, static function ($result, $item) { $result[$item['ID']] = $item; return $result; }); print_r($result);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [420] => Mary [10957] => Blah ) Array ( [420] => Array ( [ID] => 420 [name] => Mary ) [10957] => Array ( [ID] => 10957 [name] => Blah ) ) Array ( [420] => Array ( [ID] => 420 [name] => Mary ) [10957] => Array ( [ID] => 10957 [name] => Blah ) )

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