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<?php $array = [ 0 => [ "groupid" => "5", "radminid" => "1", "type" => "system", "system" => "private", ], 1 => [ "groupid" => "10", "radminid" => "2", "type" => "system", "system" => "private", ], ]; $array = array_column($array, null, 'groupid'); print_r($array);die;
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [5] => Array ( [groupid] => 5 [radminid] => 1 [type] => system [system] => private ) [10] => Array ( [groupid] => 10 [radminid] => 2 [type] => system [system] => private ) )

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