PHP 扩展相关
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.laruence.com/2009/04/28/719.html
http://www.open-open.com/lib/view/open1392188698114.html
C扩展编写翻译中文
https://github.com/gaojiyong/phpbook