How can one determine the PHP version and session configuration of a server to troubleshoot issues related to session functionality?

When troubleshooting session functionality issues in PHP, it is important to first determine the PHP version and session configuration of the server. This information can help identify any compatibility issues or misconfigurations that may be causing problems with session handling. To determine the PHP version, you can use the phpversion() function. To check the session configuration, you can use the phpinfo() function to display detailed information about the PHP environment, including session settings.

// Get PHP version
$php_version = phpversion();
echo "PHP Version: " . $php_version;

// Display session configuration
phpinfo(INFO_CONFIGURATION);