PHP Object To Array

object-to-array.php

<?php

class Foo 
{
    /**#@+
     * @var string
     */
    public $hello = "Hello";
    protected $world = "World";
    private $exclam = "!";
    /**#@-*/
    
    /**
     * @return string
     */
    public function getHello()
    {
        return $this->hello;
    }
    
    /**
     * @return string
     */
    public function getWorld()
    {
        return $this->world;
    }
    
    /** 
     * @return string
     */
    public function getExclam()
    {
        return $this->exclam;
    }
    
    /**
     * @return string[]
     */
    public function asArray()
    {
        return [
            'hello' => $this->getHello(),
            'world' => $this->getWorld(),
            'exclam' => $this->getExclam(),
        ];
    }
}

$foo = new Foo();

print_r($foo);
//  Foo Object
//  (
//      [hello] => Hello
//      [world:protected] => World
//      [exclam:Foo:private] => !
//  )

print_r($foo->asArray());
//  Array
//  (
//      [hello] => Hello
//      [world] => World
//      [exclam] => !
//  )

// https://www.vitallogic.co.uk/convert-php-object-to-associative-array/
// Solution 1 – Using json_decode & json_encode

print_r(json_decode(json_encode($foo), true));
//  Array
//  (
//      [hello] => Hello
//  )

// Solution 2 – Type Casting object to an array

print_r((array)$foo);
//  Array
//  (
//      [hello] => Hello
//      [*world] => World
//      [Fooexclam] => !
//  )