Are there best practices for handling errors in PHP scripts without modifying the php.ini file?

When handling errors in PHP scripts without modifying the php.ini file, it is best practice to use error handling functions such as `set_error_handler()` and `set_exception_handler()`. This allows you to customize error handling behavior within your script without affecting the global PHP configuration.

// Custom error handler function
function customErrorHandler($errno, $errstr, $errfile, $errline) {
    // Handle the error as needed
    echo "Error: [$errno] $errstr\n";
}

// Set custom error handler
set_error_handler("customErrorHandler");

// Trigger a custom error
$undefinedVariable = $undefinedVariable + 1;