PHP Design patterns:
http://www.php5dp.com/
Object oriented programming and reusable code
Gang of Four GoF Design Patterns
http://www.rmfusion.com/design_patterns/design_patterns_menu.htm
PHP Objects, Patterns, and Practice by Mark Zandstra
http://www.amazon.com/gp/product/1590599098/ref=olp_product_details?ie=UTF8&me=&seller=
http://www.php5dp.com/
Object oriented programming and reusable code
Gang of Four GoF Design Patterns
http://www.rmfusion.com/design_patterns/design_patterns_menu.htm
PHP Objects, Patterns, and Practice by Mark Zandstra
http://www.amazon.com/gp/product/1590599098/ref=olp_product_details?ie=UTF8&me=&seller=