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<?php $userIds = [1, 2, 3, 4, 5]; $userIdKeys = array_map(function ($index) { return ":userId_{$index}"; }, range(0, count($userIds) - 1)); $userIds = array_combine($userIdKeys, $userIds); $userIdKeyString = implode(',', $userIdKeys); var_dump($userIdKeyString, $userIds);
Output for git.master, git.master_jit, rfc.property-hooks
string(49) ":userId_0,:userId_1,:userId_2,:userId_3,:userId_4" array(5) { [":userId_0"]=> int(1) [":userId_1"]=> int(2) [":userId_2"]=> int(3) [":userId_3"]=> int(4) [":userId_4"]=> int(5) }

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