Summary of PHP class and object-related system functions and operators

This article mainly introduces the PHP class and object-related system functions and operators, combined with examples to summarize and analyze the PHP class and object operation process commonly used in system functions and operators, the need for friends can refer to the following

This article summarizes the PHP class and object-related system functions and operators. Share to everyone for your reference, as follows:

System functions

Class_exists ()	Determine if a class exists
Interface_exists ()	Determine if an interface exists
Get_class ()/class	Gets the class name where an object is located
Get_parent_class ()	Gets the class name of the parent class to which an object belongs
Get_class_methods ()	Get all methods of a class, return an indexed array
Get_class_vars ()	Get all properties of a class, subscript as property name
Get_declared_classes ()	Get all declared classes (including system classes)
Is_object ()	Determine if the object
Get_object_vars ()	Get all properties of the object, return an array, subscript the property name
Property_exists ()	Determine if the property exists in the object
METHOD	Get Method Name
FUNCTION	Get the name of a function

Operator

New	Instantiate an Object
instanceof	Determines whether an object is an instance of a class (including inheritance)

Class bee{} $o = new Bee (), if ($o instanceof Bee) {echo ' true ';}