外国三篇
http://devzone.zend.com/303/extension-writing-part-i-introduction-to-php-and-zend/#Heading1
http://devzone.zend.com/317/extension-writing-part-ii-parameters-arrays-and-zvals/
http://devzone.zend.com/446/extension-writing-part-iii-resources/
国内
http://www.open-open.com/lib/view/open1392188698114.html
原文地址：http://gaojy.blog.51cto.com/4980848/1729292
