对象类实例化数组[关闭]

问题描述：

Hello I'm having some trouble creating an array that should hold all the instances of my class. For example I'd like that everytime I instantiate an object from my main class to automatically put that object in an empty array created previously in the class.

    class Meniu_de_baza{   
        private $nume;
        private $descriere_ro;
        private $descriere_en;
        private $pret;
        private $array_obiecte[];

        function __construct($n,$d_ro,$d_en,$p){
            $this->nume = $n;
            $this->descriere_ro = $d_ro;
            $this->descriere_en = $d_en;
            $this->pret = $p;
            $this-array_obiecte = $this-

        }

        function getPret(){
            return $this->pret;
        }

        function setPret($set_pret){
            if(is_numeric($set_pret)){
                $this->pret = $set_pret;
            }else{
                echo "Pretul este invalid!";
            }
        }

        function detalii_mancare(){
            echo "Ati comandat {$this->nume} ce contine: <br />" . "{$this->descriere_ro} <br />";
        }

        function nota_plata(){
            echo "Nota Plata: <br />{$this->nume} 1 portie <br /> TOTAL: {$this->pret} RON";
        }
}

The code is attached as an image due to an issue I've occured trying to put it in a code block. Thanks in advance. Any advice is appreciated.

答

small example

class Sample{
    private static $objects=array();

     public function __construct()
    {
        static::$objects[]=$this;
    }

    public function getObjects(){
         return static::$objects;
    }

}

declare that field as static so variable will be at class level not at object level.

How to use:

new Sample();
new Sample();
new Sample();

$a=new Sample();

var_dump($a->getObjects());

Hope this might help you

EDIT FOR YOUR CODE:

class Meniu_de_baza{   
        private $nume;
        private $descriere_ro;
        private $descriere_en;
        private $pret;
        private static $array_obiecte[];

        function __construct($n,$d_ro,$d_en,$p){
            $this->nume = $n;
            $this->descriere_ro = $d_ro;
            $this->descriere_en = $d_en;
            $this->pret = $p;
            static::$array_obiecte[] = $this;

        }

        function getPret(){
            return $this->pret;
        }

        function setPret($set_pret){
            if(is_numeric($set_pret)){
                $this->pret = $set_pret;
            }else{
                echo "Pretul este invalid!";
            }
        }

        function detalii_mancare(){
            echo "Ati comandat {$this->nume} ce contine: <br />" . "{$this->descriere_ro} <br />";
        }

        function nota_plata(){
            echo "Nota Plata: <br />{$this->nume} 1 portie <br /> TOTAL: {$this->pret} RON";
        }

Problem with your code :

you forgot semicolon at static::$array_obiecte = $this;

对象类实例化数组[关闭]

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