How can developers effectively troubleshoot issues related to custom PHP functions in WordPress, especially when lacking experience in PHP programming?

Issue: Troubleshooting custom PHP functions in WordPress can be challenging for developers with limited PHP programming experience. One effective way to solve this is by using debugging tools like WP_DEBUG to identify errors in the code. Additionally, breaking down the function into smaller parts and testing each part individually can help pinpoint the issue.

// Example PHP code snippet for debugging custom function in WordPress
// Enable debugging in WordPress
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

// Custom PHP function to troubleshoot
function custom_function() {
    // Code to troubleshoot goes here
}

// Test the function
custom_function();