static-factory.md

<?php

final class StaticFactory {

	public static function make($type) {
		if($type == 'number'){
			return new FormatNumber();
		}

		if($type == 'string'){
			return new FormatString();
		}
	}
}

interface FormatterInterface {
	public function format($n);
}

class FormatNumber implements FormatterInterface {

	public function format($n){
		echo 'Formatando numero: '. $n;
	}
}

class FormatString implements FormatterInterface {
	public function format($n){
		echo 'Formatando string: ' . $n;
	}
}

$formatter = StaticFactory::make('string');
$formatter->format('testando 1, 2, 3...');