Anonymous functions can be bound to objects

Anonymous functions created within object context are always bound to that object

Assigning closure to a property of an object binds it to that object

Methods bind() and bindTo() of the Closure object provide means to create closures with different binding and scope

Binding defines the value of $this and the scope for a closure

htmlentities()

addslashes()

stripslashes()

strip_tags()

htmlspecialchars()

set(), get()

__set(), __get()

__put(), __receive(), __exist()

set(), get(), isset()

_isset(), __unset()

2XX

3XX

4XX

5XX

E_ERROR

E_NOTICE

E_PARSE

E_WARNING

array_flip()

array_reverse()

rsort()

krsort()

array_multisort()

Analysing of nearly any aspect of classes and interfaces

Analysing of nearly any aspect of functions

Adding class methods

Implement dynamic construction (new width variable class name)