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<?php $array_1 = array("1a-dogs","2a-cats","3a-birds","4a-people"); $array_2 = array("4a-walking","2a-cats"); function splitArray ($arrayInput) { $arrayOutput = array(); foreach ($arrayInput as $element) { $tempArray = explode('-', $element); $arrayOutput[$tempArray[0]] = $tempArray[1]; } return $arrayOutput; } $arraySplit1 = splitArray($array_1); $arraySplit2 = splitArray($array_2); print_r($arraySplit1); print_r($arraySplit2); foreach ($arraySplit1 as $key1 => $value1) { if (array_key_exists($key1, $arraySplit2)) { $arraySplit1[$key1] = $arraySplit2[$key1]; } } print_r($arraySplit1);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [1a] => dogs [2a] => cats [3a] => birds [4a] => people ) Array ( [4a] => walking [2a] => cats ) Array ( [1a] => dogs [2a] => cats [3a] => birds [4a] => walking )

preferences:
179.24 ms | 406 KiB | 354 Q