Dependency Injection (DI) and control inversion (IOC) "Review"

The idea of IOC is widely used in Java development and is also widely used in PHP.

1 Interface Coder 2 {3      Public function coding (); 4 }

Implementing Class Javaer

1 classJavaerImplementsCoder2 {3     var $name;4 5      Public function__construct ($name)6     {7         $this->name =$name;8     }9      Public functionCoding ()Ten     { One         Echo"$this->name.is Coding Java code.<br> "; A     } -}

Implementing Class Phper

1 classPhperImplementsCoder2 {3     var $name;4 5      Public function__construct ($name)6     {7         $this->name =$name;8     }9      Public functionCoding ()Ten     { One         Echo"$this->name.is Coding php code.<br> "; A     } -}

Business Logic Class Task

1 classTask2 {3     var $name;4     var $owner;5     6      Public function__construct ($name)7     {8         $this->name =$name;9     }Ten      One      Public functionSetOwner ($owner){ A         $this->owner =$owner; -     } -  the      Public functionStart () -     { -         Echo"$this->name.started!<br> "; -         $this->owner->coding (); +     } -}

Test

1         $task New Task ("Task #1"); 2 //         $owner = new Phper ("XIAOHB"); 3         $owner New Javaer ("Xiaoxiao"); 4         $task->setowner ($owner); 5         $task->start ();

The maintainability and extensibility of the code is obvious.

Dependency Injection (DI) and control inversion (IOC) "Review"