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<?php $array = [ [2015 => '2015'], [2016 => '2016'], [2017 => '2017'], [2018 => '2018'], [2019 => '2019'], [2020 => '2020'], [2021 => '2021'], [2022 => '2022'], [2023 => '2023'] ]; $result = []; foreach ($array as $row) { foreach ($row as $k => $v) { $result[$k] = $v; } } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 2015 => '2015', 2016 => '2016', 2017 => '2017', 2018 => '2018', 2019 => '2019', 2020 => '2020', 2021 => '2021', 2022 => '2022', 2023 => '2023', )

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