来自其他类的PHP调用来自子类的父方法

Question

I've 3 classes in my project (connection , parent and child class).

Parent

class Upload {

   public function UploadFile(){
        /* some code */     
   } 
}

Child

class Photos extends Upload {

  public function getUrl(){
      /* some code */           
  } 

  public function UploadPhoto(){

     $this->getUrl();   

     $this->UploadFile();       
  } 
}

Now, I'd like to create a class that can use the methods of other classes.

Class Example {

private $db;
private $ph;

     public function __construct( Mysqliconn $db, Photo $ph) {

        $this->db = $db;    
        $this->ph = $ph;   
     } 

     public function callUploadPhoto() {

        $this->ph->UploadPhoto();
     }
}

instantiated in this way

$db = new Mysqliconn();
$ph = new Photos($db);
$ex = new Example($db, $ph);

My problem is that I can call the methods of other classes but not the method that refers to the parent class. If I call $ex->callUploadPhoto() that calls getUrl() method of photos class but not the parent Upload method Upload() . How could I do this? thanks

Answer 1

try to use new php 5.4.0 future traits

that can solve your problem very easily...

Answer 2

What exactly is the error you are getting?

and what is $name variable in UploadPhoto function line 2 ie, $this->Upload($name)?

Answer 3

Your Example class needs to extend the Photos class. That fixes it.