What could be causing a "500 Internal Server Error" when submitting a form in PHP?

The "500 Internal Server Error" typically occurs when there is an issue with the server-side code, such as a syntax error, exceeding server resource limits, or misconfigured server settings. To solve this issue, check the server error logs for more specific details on what went wrong, ensure all PHP code is error-free and optimize resource usage.

// Example code to troubleshoot and fix a "500 Internal Server Error" when submitting a form in PHP
// Check server error logs for more specific details
// Ensure all PHP code is error-free and optimize resource usage