CODEWITHSUNDEEP
php
sam
sam

Reputation: 91

Why we can't create object of another class as an element in php

I seen some of the answers of the same questions in the forum.. but still the answers are not providing a clear idea..

In other languages like C# is executing fine. but why not PHP?

Check the example:

class Student
{
    public $name;
    public $age;
    private $number;
}

class ss
{
    public $obj;
    public $objs=new Student();     //generating error

    public function act()
    {
        $obj = new Student();
        $obj->study();
        $obj->studentinfo();
    }
}

$ob = new ss();
$ob->act();

Upvotes: 1

Views: 687

Answers (2)

Hkachhia
Hkachhia

Reputation: 4539

Try this code 

class Student
{
    public $name;
    public $age;
    private $number;
}
class ss
{
    var $obj;
    public function __construct()
    {
        $this->obj = new Student();
        $this->obj->study();
        $this->obj->studentinfo();
    }
}

$ob=new ss();
$ob->act();

Upvotes: 1

noetix
noetix

Reputation: 4933

As per the PHP docs, any property values must be of a constant value.

This declaration may include an initialization, but this initialization must be a constant value--that is, it must be able to be evaluated at compile time and must not depend on run-time information in order to be evaluated.

If you want $objs to be a new instance of Student, you should initailise it in your constructor:

public function __constructor()
{
    $this->objs = new Student();
}

Upvotes: 1

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