In PHP, what are the advantages of using array_merge_recursive() to combine arrays before encoding them into a JSON string, compared to other methods?

When combining arrays in PHP before encoding them into a JSON string, using array_merge_recursive() is advantageous because it merges the arrays recursively, allowing for nested arrays to be combined without overwriting values. This ensures that all elements from both arrays are preserved in the final result. 

// Example code snippet using array_merge_recursive() to combine arrays before encoding them into a JSON string
$array1 = ['a' => ['b' => 'c']];
$array2 = ['a' => ['d' => 'e']];
$combinedArray = array_merge_recursive($array1, $array2);
$jsonString = json_encode($combinedArray);
echo $jsonString;

Keywords

PHP array_merge_recursive() JSON arrays encoding

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