How can one effectively debug and view JSON data being transmitted in a PHP application?

To effectively debug and view JSON data being transmitted in a PHP application, you can use the `json_encode()` and `json_decode()` functions to encode and decode JSON data respectively. You can also use `var_dump()` or `print_r()` functions to display the JSON data in a human-readable format for debugging purposes.

// Sample JSON data to encode
$data = array('name' => 'John Doe', 'age' => 30, 'city' => 'New York');
$jsonData = json_encode($data);

// Display JSON data for debugging
echo '<pre>';
var_dump(json_decode($jsonData, true));
echo '</pre>';