#li3 > Lithium Documentation > lithium/core/ErrorHandler::run()

Extends

Register error and exception handlers.

This method (`ErrorHandler::run()`) needs to be called as early as possible in the bootstrap cycle; immediately after `require`-ing `bootstrap/libraries.php` is your best bet.

Parameters

array $config The configuration with which to start the error handler. Available options include: - `'trapErrors'` _boolean_: Defaults to `false`. If set to `true`, PHP errors will be caught by `ErrorHandler` and handled in-place. Execution will resume in the same context in which the error occurred. - `'convertErrors'` _boolean_: Defaults to `true`, and specifies that all PHP errors should be converted to `ErrorException`s and thrown from the point where the error occurred. The exception will be caught at the first point in the stack trace inside a matching `try`/`catch` block, or that has a matching error handler applied using the `apply()` method.

Returns

void

Source

						public static function run(array $config = array()) {
		$defaults = array('trapErrors' => false, 'convertErrors' => true);

		if (static::$_isRunning) {
			return;
		}
		static::$_isRunning = true;
		static::$_runOptions = $config + $defaults;
		$self = get_called_class();

		$trap = function($code, $message, $file, $line = 0, $context = null) use ($self) {
			$trace = debug_backtrace();
			$trace = array_slice($trace, 1, count($trace));
			$self::handle(compact('type', 'code', 'message', 'file', 'line', 'trace', 'context'));
		};

		$convert = function($code, $message, $file, $line = 0, $context = null) use ($self) {
			throw new ErrorException($message, 500, $code, $file, $line);
		};

		if (static::$_runOptions['trapErrors']) {
			set_error_handler($trap);
		} elseif (static::$_runOptions['convertErrors']) {
			set_error_handler($convert);
		}
		set_exception_handler(static::$_exceptionHandler);
	}