What are the potential issues with passing data from JavaScript to PHP using GET or POST methods?

One potential issue with passing data from JavaScript to PHP using GET or POST methods is that the data may not be properly sanitized, leaving the application vulnerable to security risks such as SQL injection attacks. To solve this issue, it is important to validate and sanitize the data on the server-side before using it in any database queries or other operations.

// Example of sanitizing data received from JavaScript POST method
$data = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);