What potential issues can arise when outputting large arrays using JSON in PHP?

When outputting large arrays using JSON in PHP, potential issues can arise due to memory limitations or performance issues. To solve this problem, you can use the `json_encode()` function with the `JSON_UNESCAPED_UNICODE` option to reduce the memory usage and improve performance.

// Output large array using JSON with JSON_UNESCAPED_UNICODE option
$jsonData = json_encode($largeArray, JSON_UNESCAPED_UNICODE);
echo $jsonData;