How can PHP developers effectively troubleshoot and debug issues related to parsing JSON data from a webservice?

When troubleshooting and debugging issues related to parsing JSON data from a webservice in PHP, developers can use the `json_last_error()` function to check for any errors during the decoding process. This function returns an integer representing the last error that occurred while decoding JSON data. By checking this error code, developers can identify and resolve any issues with parsing JSON data.

// Sample code snippet to parse JSON data from a webservice and check for errors
$jsonData = file_get_contents('https://example.com/api/data');
$data = json_decode($jsonData);

if (json_last_error() !== JSON_ERROR_NONE) {
    echo 'Error parsing JSON data: ' . json_last_error_msg();
    // Additional error handling code can be added here
} else {
    // JSON data was successfully parsed, continue processing the data
    // Code to handle the parsed JSON data goes here
}