How to print the current call stack, function arguments and local variables?

How to stop program execution and print current function, its arguments, call stack and local variables?

We need to activate Debugger in strict mode:

Debugger::$strictMode = TRUE
Debugger::enable();

(or using $configurator->enableDebugger()).

Than simply call $stop() in place you want to break program execution and show all information:

	public function authenticate(array $credentials)
	{
		list($username, $password) = $credentials;
		$row = $this->users->where('username', $username)->fetch();
		$stop();

		...

Debugger will show you all information in eye-candy format.