What alternative solution can be implemented to prevent the keys from being reassigned in the array?

The issue of keys being reassigned in an array can be prevented by using the array_merge function to merge the arrays without reindexing the keys. By merging the arrays, the keys will be preserved and not reassigned. 

// Merge arrays without reassigning keys
$array1 = ['a' => 1, 'b' => 2];
$array2 = ['c' => 3, 'd' => 4];

$mergedArray = array_merge($array1, $array2);

print_r($mergedArray);

Keywords

array_unique array_values array_flip array_merge array_combine

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