php oop exercises

In PHP 4, declaring a variable usually uses VAR, in PHP 5, you can use object-oriented programming (OOP) features to customize the visibility of data-accessibility, which is similar to the scope of the variable, but provides a better control mechanism with the following three types of visibility modifiers:Public (default)--variables can be accessed or modified gl

method name of the non-existent method is passed to the first parameter, The second parameter is to pass multiple arguments of this method in the form of an array. . This is a test class with no properties or methods.Class Test{Methods that are called automatically when an existing method is called, the first parameter is the method name, the second argument is the array parameterfunction __call ($function _name, $args) {Print "The function you call: $fun

Phpclassperson{Declares a new variable public variable $name, which can be accessed by any class in the package Public$name; Public$sex; Public$age;One way to declare this classfunctionsay () {EchoHello"; Echo"My name is:".$thisName. ""; Echo"My Sex is:".$thisSex. ""; } }Declares a subclass of the new student class as personclassStudentextendsperson{ Public$school; functionStudy () {Parent:: Can be used to invoke a member method defined in the parent class.Parent::say ();Echo"My Age is:".$t

As we said before, the method that declares the method name of "__" in the class (provided to us by PHP) is the method that executes automatically at a certain time under different circumstances, and the "__tostring ()" method is also automatically called, which is called automatically when the object reference is directly exported. We said before that the object reference is a pointer, for example: "$p =new person ()", $p is a reference, we can not u

Ask for help? PHP OOP Example class animal{ Public $name = "";Public $color = "";Public $age = "";function GetInfo () {return $this->name;}function SetInfo ($name) {return $this->name;} Compiler prompt Warning}$pig =new animal ();$pig->setinfo (' pig ');$name = $pig->getinfo ();//Compiler hint ErrorEcho $name;?> PHP Share to: ------Solution----

shape of a wide range of points, we do a rectangular bar, first analysis, think of two aspects of analysis, the properties of the rectangle what? What are the functions of a rectangle? 123456789 class矩形 {//　矩形的属性矩形的长；矩形的宽；//　矩形的方法矩形的周长；矩形的面积；} PHP Code: 1234567891011121314 classRect {var$kuan;var$gao;functionzhouChang() {计算矩形的周长；}functionmianJi() {计算矩形的面积；}}?> If you use this class to create mu

In PHP 4, declaring a variable usually uses VAR, in PHP 5, you can use object-oriented programming (OOP) features to customize the visibility of data-accessibility, which is similar to the scope of the variable, but provides a better control mechanism with the following three types of visibility modifiers: Public (default)--variables can be accessed or modified

interface. Echo"I eating". $food."\ n"; Once you have implemented an interface, you must provide a concrete implementation of the methods defined in the interface. }23} $test=NewHuman (); $test->eat ('Apple'); ?>The output effect is as follows:I eating apple00x2 Case TwoThe inheritance of multiple interfaces can be achieved by separating them with commas after implments.Format:Implements interface 1, interface 2,....PHPInterfaceicaneat{ Publicfunction Eat ($food);}Interfacehello{ Publicfucti

Ask for help? PHP OOP Example class animal{ Public $name = "";Public $color = "";Public $age = "";function GetInfo () {return $this->name;}function SetInfo ($name) {return $this->name;} Compiler prompt Warning}$pig =new animal ();$pig->setinfo (' pig ');$name = $pig->getinfo ();//Compiler hint ErrorEcho $name;?> PHP Share to: ------Solution----

encapsulation:①__set ($key, $value): called automatically when assigning a value to a class private property, passing two arguments to a method when invoked: the property name and the property value to be set;②__get ($key): Automatically called when the class private property is read, passing a parameter to the method when invoked: the name of the property to be read;③__isset ($key): called automatically when a private property is detected externally using the Isset () function.Use Isset () out

the constructorWhen a constructor is used to instantiate an object, it is automatically called and an initialization value is assigned to a property in the class 3. How the constructor functions①, same name as Class[Public] function person ($name) { $this->name = $name;}② using the Magic method _construct, does not require the same name as the class[Public] Function _construct ($name) { $this->name = $name;}4. Considerations for Constructors:①, the first form of writing, must be

Access modifiers in php oop /* The following two methods declare that the access permission works the same */ Function say (){}; Publilc function say (){}; When a class member is declared as a public access modifier, the member can be accessed and operated by external code. Private (private) is defined as a private member. it is visible to all m

1PHP2 3 //objects are stored in a collection called the Stdclass class inside PHP.4 Header("Content-type:text/html;charset=utf-8");5 classstudent{6 Public $name;7 Public $gender;8 Private $_age;9 Ten //declaring a constructor method One Public function__construct ($name,$gender,$_age){ A $this->name =$name; - $this->gender =$gender; - $this-$_age=$_age; the } - - } - + $s=NewStudent (' J

Do not say his concept, if you want to build a computer classroom, first to have a room, the room to have n computers, there are n tables, n chairs, white boards, projectors and so on, these are what, just now we said, this is the object, can see the entity, Can say this computer classroom unit is this one entity object, they together compose this computer classroom, then we are the procedure, this and object-oriented have what relation? Develop a system program and build a computer classroom. S

computer (); Example 1New computer (); Example 2Execution method$computer->run ();You can also add some parameters to the method, and when you do, pass in these parameters.Class Computer {Methods of the classfunction Run ($_what) {echo $_what. ' The success of the run! ‘;}}$computer = new computer ();$computer->run (' computer ');Construction methodThe so-called construction method is also a method, but a special method. And the method name must match the class name,And it does not need to be d

provide as few operations as possible outside.If you provide an interface outside the class, you can manipulate the private property by providing a set method and a Get method outside the class for the private property. For example:Prvate $age; The private attribute Age function setage ($age)//provides a public setting age for the external method {if ($age The method above is to set and get values for a member property, and of course you can use the same method for each property to assign and v

The definition of the 　　PHP oop-1

Look directly at the case. More simple. Not explained.PHP $chengji=" -"; #先定义一个变量赋值一个数值Switch($chengji) { Case$chengji - $chengji >= -; #case的意思是案例. If the case is set up, execute the output or do not perform the echo"Excellent"; Break; Case$chengji - $chengji >= the; Echo"Medium"; Break; Case$chengji the; Echo"Garbage"; Break; default: #违约, if this is not done in these cases. Echo"Don't know! "; Break;} ?>Follow Baidu Learn Php[4]

In program development, if the calling method does not exist when invoking an object's internal method, the program will go wrong, and then the program exit cannot continue execution. So, when the program calls the method that does not exist inside the object, we are prompted to call the method and the parameters used do not exist, but the program can continue to execute, at this time we will use the method called when the non-existent method "__call ()".The END Follow Baidu Learn

What is an abstract method? The method that we define in the class without the method body is an abstract method. The so-called no method body refers to the method declaration when there is no curly braces and the contents of it, but directly at the declaration of the method name after the end of the semicolon, and in the declaration of the abstract method also add a keyword "abstract" to decorate. Catalogue ====================================1. Declaring an abstract class, abstract method (ca