Access instance variable inside anonymous callback PHP

Question

Lets suppose i have a class & i have to set instance variable from inside the callback.

class A{
   protected $user;

   public __construct(){
      /* Some function here which accept callback */
      StoreData(['name'=>'Stackoverflow'],function($response){
           //how to assign value to $user here???
      });
   }
}

Answer 1

What about something like this?

class A{
    protected $user;

    public function  __construct(){
        $this->user = 'hehexd';
    }

    public function  getFunction(){
        $temp = $this->user; // or a reference
        $rval = function($response) use ($temp){
            echo $temp;
        };

        return $rval;
    }
}

$a = new A();
$func = $a->getFunction();
$func('response');
exit;

Answer 2

You can assign the entire object to a variable and inject it into the use() thereby modifying the object (presumably this is what you mean?) :

<?php
class bug
    {
        protected $user;

        public  function test()
            {
                $thisObj    =   $this;
                goo('test',function() use ($thisObj) {
                    $thisObj->user  =   'foooooooo';
                });

                echo $this->user;
            }
    }

function goo($val,$callback)
    {
        $callback();
    }

$bug    =   new bug();
$bug->test();

You will get:

foooooooo

Answer 3

$message = 'hello';

// No "use"
$example = function () {
    var_dump($message);
};
$example();

// Inherit $message
$example = function () use ($message) {
    var_dump($message);
};
$example();

http://php.net/manual/en/functions.anonymous.php