Question

在我的php项目中，我创建了4个类

CONNECTION

class Mysqliconn {

   public $mysqli;  

   public function __construct(){
      include "dbconfig.php";
      $this->connect($host, $user, $password, $database, $charset);
   }

   public function connect (.....)
      $this->mysqli = new mysqli(......);
   }
}

UPLOAD

class Upload {

     private $db;

     public function __construct( Mysqliconn $db ) {
        $this->db = $db; 
     }

     public function getID($id) {
        echo $id;
     }
}

USERS

class Users {

 private $db;

      public function __construct( Mysqliconn $db ) {
          $this->db = $db; 
      }

      public function getName($name) {
      echo $name;
      }
}

CARS

class Cars {

     private $db;

     public function __construct( Mysqliconn $db ) {
            $this->db = $db; 
     }

     public function getCars($cars) {
        echo $cars;
     }
 }

在我的php页面中，我以这种方式实例化了

function __autoload($class_name) {
    if(file_exists('class/class.' . strtolower($class_name) . '.php')) {
        require_once('class/class.' . strtolower($class_name) . '.php'); 
    }
    else {
        throw new Exception("Unable to load $class_name.");
    }
}

$db = new Mysqliconn();
$up = new Upload($db);
$us = new Users($db);
$cs = new Cars($db);

$cs->getCars('BMW');
$us->getName('Foo');

在我的汽车类中，我想调用用户和上传类的方法。有可能做到吗？我怎么能这样做？谢谢。

Answer 1

class Example{

    public function __construct(){
        $otherClass = new OtherClass();
        $otherClass->functionInOtherClass();
    }

}

或

class Example{

    public function __construct($objFromOtherClass){
        $objFromOtherClass->functionInOtherClass();
    }

}

或

class Example{

    public function __construct(OtherClass $objFromOtherClass){
        $objFromOtherClass->functionInOtherClass();
    }

}

如果有问题的对象将在Example课程中使用：

class Example{

    protected $objFromOtherClass;

    public function __construct(OtherClass $objFromOtherClass){
        $this->objFromOtherClass = $objFromOtherClass;
    }

    public function test(){
        $this->objFromOtherClass->functionInOtherClass();
    }

}

Answer 2

您可以在其他类中调用公共静态函数：

class Users {

private $db;

  public function __construct( Mysqliconn $db ) {
      $this->db = $db; 
  }

  public static function getName($name) {
  echo $name;
  }
}


class Cars {
 private $db;

 public function __construct( Mysqliconn $db ) {
        $this->db = $db; 
 }

 public function getCars($cars) {
    echo $cars;
 }

    public function callGetName($name)
   {
         return  Users:: getName($name) ;
   }
}

另一种选择是：

function callGetName($name)
 {
   $user = new Users();
   $user->getName($name);
 }

PHP调用其他类的方法

2 个答案: