What are the potential pitfalls of transposing a JSON string into a more readable array format for easier manipulation in PHP?

Transposing a JSON string into a more readable array format in PHP can lead to potential pitfalls such as incorrect data mapping, loss of nested structures, and increased memory usage. To avoid these issues, it is important to properly decode the JSON string using `json_decode` with the second parameter set to `true` to ensure it is decoded into an associative array.

$jsonString = '{"key1": "value1", "key2": "value2"}';
$arrayData = json_decode($jsonString, true);

// Now $arrayData is a readable array that can be easily manipulated