Here are the compiled links and resources for Design Pattern:

PHP Patterns
http://www.phppatterns.com

Introduction to Design Patterns Using PHP
http://www.devarticles.com/c/a/PHP/Introduction-to-Design-Patterns-Using-PHP/

Five common PHP design patterns
http://www.devarticles.com/c/a/PHP/Introduction-to-Design-Patterns-Using-PHP/

Design Patterns in PHP - Factory Method and Abstract Factory
http://www.devshed.com/c/a/PHP/Design-Patterns-in-PHP-Factory-Method-and-Abstract-Factory/

PHP Design Patterns Reference and Examples from fluffycat.com
http://www.fluffycat.com/PHP-Design-Patterns/

Design Patterns in Web Programming
http://www.e-gineer.com/v1/articles/design-patterns-in-web-programming.htm