trait in php example

1<?php
2/**
3 * Inheritance in unnecessary function is also called we we don't require them, so we can prevent them using traits
4 * Trait is only available when we use them otherwise not!
5 */
6trait A
7{
8    function fun1()
9    {
10        echo "class A called";
11    }
12}
13class B 
14{
15    use A;
16    function fun2()
17    {
18        echo "class B called";
19    }
20}
21class C extends B
22{
23    function fun3()
24    {
25        echo "class C called";
26    }
27}
28class D extends C
29{
30    use A;
31    function fun4()
32    {
33        echo "class D called";
34    }
35}
36$obj = new C();
37$obj->fun1();
38?>

1
2<?php
3trait Hello {
4    public function sayHello() {
5        echo 'Hello ';
6    }
7}
8
9trait World {
10    public function sayWorld() {
11        echo 'World!';
12    }
13}
14
15trait HelloWorld {
16    use Hello, World;
17}
18
19class MyHelloWorld {
20    use HelloWorld;
21}
22
23$o = new MyHelloWorld();
24$o->sayHello();
25$o->sayWorld();
26?>
27
28  // L'exemple ci-dessus va afficher : Hello World !
29

1
2<?php
3class Base {
4    public function sayHello() {
5        echo 'Hello ';
6    }
7}
8
9trait SayWorld {
10    public function sayHello() {
11        parent::sayHello();
12        echo 'World!';
13    }
14}
15
16class MyHelloWorld extends Base {
17    use SayWorld;
18}
19
20$o = new MyHelloWorld();
21$o->sayHello();
22?>
23
24