摘要：
php.net PHP 5 allows developers to declare constructor methods for classes. Classes which have a constructor method call this method on each newly-cre 阅读全文
摘要：
php.net Many developers writing object-oriented applications create one PHP source file per class definition. One of the biggest annoyances is having 阅读全文
摘要：
php.net Class member variables are called "properties". You may also see them referred to using other terms such as "attributes" or "fields", but for 阅读全文