Where to find "template" interfaces?

Question

I wonder where you can find the template interfaces.

eg. I create these classes that implement iLog:

 DatabaseLog
 ScreenLog
 FileLog

I wonder what methods a regular log class should have?

There is a set of interfaces that you could just implement / learn, rather than reinvent the wheel and think about method names.

eg. Interfaces:

 iLog
 iDatabase
 iErrorMessage
 etc.

thank

Answer 1

PHP defines the following interfaces (should, but may not be complete):

• Traversable - Traversable interface
• Iterator - Iterator Interface
• IteratorAggregate - IteratorAggregate interface
• ArrayAccess - ArrayAccess Interface
• Serializable - Serializable Interface
• Counting - counter interface
• OuterIterator - OuterIterator interface
• RecursiveIterator - RecursiveIterator
• SeekableIterator - SeekableIterator
• SplObserver - SplObserver
• SplSubject - SplSubject

.

• http://de.php.net/manual/en/reserved.interfaces.php
• http://de.php.net/manual/en/spl.interfaces.php
• http://de.php.net/manual/en/spl.misc.php

Logger Interface, , log($message, level) .