usort
Introduction
Variable and Type Related Extensions
PHP Manual
Class/Object Information
Introduction
Installing/Configuring
Requirements
Installation
Runtime Configuration
Resource Types
Predefined Constants
Examples
Classes/Object Functions
__autoload
— Attempt to load undefined class
call_user_method_array
— Call a user method given with an array of parameters
call_user_method
— Call a user method on an specific object
class_alias
— Creates an alias for a class
class_exists
— Checks if the class has been defined
get_called_class
— the "Late Static Binding" class name
get_class_methods
— Gets the class methods' names
get_class_vars
— Get the default properties of the class
get_class
— Returns the name of the class of an object
get_declared_classes
— Returns an array with the name of the defined classes
get_declared_interfaces
— Returns an array of all declared interfaces
get_declared_traits
— Returns an array of all declared traits
get_object_vars
— Gets the properties of the given object
get_parent_class
— Retrieves the parent class name for object or class
interface_exists
— Checks if the interface has been defined
is_a
— Checks if the object is of this class or has this class as one of its parents
is_subclass_of
— Checks if the object has this class as one of its parents or implements it.
method_exists
— Checks if the class method exists
property_exists
— Checks if the object or class has a property
trait_exists
— Checks if the trait exists
usort
Introduction
Variable and Type Related Extensions
PHP Manual