php object oriented programming

1. Built-in exception handling class exceptionPHPTry{$num=2; if($num = =1) {echo"Success"; }Else{ Throw NewException ();//throws an exception, exception is a class name } }Catch(Exception $e) {//Catching exceptionsEcho $eGetFile ();

1. Definition of Class The class keyword + class name +{}, in curly braces, defines variables and methods. The variables of the class are declared with Var, or the values can be initialized. After a class is created, you can use

Class constants are a very important concept in PHP object-oriented programming, and mastering class constants can help further improve the level of object-oriented programming in PHP. This paper describes the usage of class constants in PHP

Object-oriented three major features:Encapsulation, inheritance, polymorphismClass:Class (Properties, methods), objects, method overrides,Static (property/method) Static members are shared by each instance object of this class and can be accessed

Get_object_vars function to convert a field with access in an object to an array test ();? > Results Array (2) {["B"]=> int (1) ["C"]=> Null}array (4) {["a"]=> null ["B"]=> int (1) ["C"]=> NULL ["D"] = NULL} 2.array get_class_methods (mixed

InterfaceInterface is to define the common behavior of different classes, and then implement different functions within different classes. When a lot of people develop a project together, it may be to call someone else to write some of the classes,

Inherited1. Class members defined within the parent class can save programming time and cost by not repeating definitions in subclasses2. Subclasses of the same parent class have the same class members as defined by the parent class, so they can be

/** 1. Static properties are used to hold the class's public data* 2. Static methods can only access static properties* 3. Static members do not need to instantiate objects to be accessible* 4. The inside of a class can access its own static members

This article mainly describes PHP object-oriented programming methods. In PHP, we can use classes like C ++ and C # To encapsulate some of the methods we commonly use and then call them when instantiating them. Constructor: Class mypc { Function _

7 good habits of PHP object-oriented programming (1 ). In the early days of PHP programming, PHP code was essentially process-oriented. The feature of process code is to use process to build application blocks. By allowing calls between processes, a

PHP object-oriented programming. Object-oriented programming is designed to provide solutions for large-scale software projects, especially projects with multi-person cooperation. when the source code grows to 10 thousand lines or even more lines,

Proxy and exception customization in PHP object-oriented programming (1 ). I. DBQuery object now, our DBQuery object simply imitates a stored procedure-once executed, it returns a result resource that must be saved; and if you want to use this 1.

Method 4 of PHP object-oriented programming for large-scale PHP project development. PHP's advanced OOP technology after reading the basic OOP concepts, I can show you more advanced technology: serialization PHP does not support permanent objects,

Php object-oriented programming learning notes. Object-oriented programming is a commonly used method in php. This article introduces the simple use of php object-oriented methods and some basic knowledge for your reference. (OOP) development of

Copy CodeThe code is as follows: /* PHP Object-oriented programming** PHP5** Arrays and objects: a compound type of PHP (one variable can store multiple units)** Objects are more powerful than arrays, not only can you store multiple data, but

This paper describes the definition and usage of PHP object-oriented programming class. Share to everyone for your reference, as follows: name = $name; $this->sex = $sex; $this->age = $age; }//is automatically called when assigning a value

PHP object-oriented programming (oop) learning notes (2)-static variable attributes and methods and latency binding. Static keywords are used to define static methods and attributes. Static keywords can also be used to define static variables and

PHP object-oriented programming (oop) learning Notes (1)-abstract classes, object interfaces, instanceof and contractual programming. 1. PHP's abstract class PHP5 supports abstract classes and abstract methods. Classes defined as abstract cannot be

PHP object-oriented programming and design patterns (4 ). PHP advanced programming study notes exceptions are often used to handle various types of errors encountered during normal program execution. For example, when you do database links, you need

PHP object-oriented programming and design patterns (2 ). PHP advanced programming study notes this article discusses static keywords, which can be used in variables, classes, and methods. 1. static variables are variable PHP advanced programming