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<?php $array = ["2019 Honda Civic" => "Sedan", "Maruti Suzuki Baleno" => "Hatchback", "Rolls-Royce Phantom" => "Sedan"]; $result = []; foreach ($array as $k=>$v) { if (!isset($result[$v])) $result[$v] = [$k]; else $result[$v][] = $k; } print_r($result);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Array ( [Sedan] => Array ( [0] => 2019 Honda Civic [1] => Rolls-Royce Phantom ) [Hatchback] => Array ( [0] => Maruti Suzuki Baleno ) )
preferences:
77.79 ms | 1692 KiB | 4 Q