Are there any potential pitfalls to be aware of when using array_merge_recursive in PHP?

When using array_merge_recursive in PHP, one potential pitfall to be aware of is that it merges arrays recursively, which can lead to unexpected results if the arrays have the same keys. To avoid this issue, you can use array_merge instead, which merges arrays in a non-recursive manner. 

// Using array_merge instead of array_merge_recursive to avoid potential pitfalls
$array1 = ['a' => ['b']];
$array2 = ['a' => ['c']];
$result = array_merge($array1, $array2);

print_r($result);

Keywords

array_merge_recursive PHP multidimensional arrays recursive merging data structure

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