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<?php $arrays = [ [ 77 => ['Bold Condensed', 'Bold Condensed 2', 'Bold Condensed 3'], ], [ 77 => ['Bold Condensed'], 136 => ['Regular'], ], [ 77 => ['Bold Condensed (1, 2, 3)'], 168 => ['Regular', 'Bold'], ] ]; $result = []; foreach ($arrays as $set) { foreach ($set as $id => $row) { foreach ($row as $value) { if (!isset($lookup[$id][$value])) { $lookup[$id][$value] = $value; $result[$id][] = $value; } } } } var_export($result);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 77 => array ( 0 => 'Bold Condensed', 1 => 'Bold Condensed 2', 2 => 'Bold Condensed 3', 3 => 'Bold Condensed (1, 2, 3)', ), 136 => array ( 0 => 'Regular', ), 168 => array ( 0 => 'Regular', 1 => 'Bold', ), )
preferences:
89.19 ms | 1148 KiB | 4 Q