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<?php $array = [ ['term_title' => 'black'], ['color_quantity' => 2], ['color_price' => 22], ['term_title' => 'blue'], ['color_quantity' => 3], ['color_price' => 33], ]; foreach ($array as $index => $subarray) { $key = key($subarray); $result[intdiv($index, 3)][$key] = $subarray[$key]; } var_export($result);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array ( 0 => array ( 'term_title' => 'black', 'color_quantity' => 2, 'color_price' => 22, ), 1 => array ( 'term_title' => 'blue', 'color_quantity' => 3, 'color_price' => 33, ), )

preferences:
123.2 ms | 402 KiB | 121 Q