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recursively cast a PHP object to array
<?php
/*
This function saved my life.
found on: http://www.sitepoint.com/forums//showthread.php?t=438748
by: crvandyke
It takes an object, and when all else if/else/recursive functions fail to convert the object into an associative array, this one goes for the kill. Who would'a thunk it?!
*/
$array = json_decode(json_encode($object), true);
@dsteplight

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@dsteplight dsteplight commented Dec 2, 2014

Do you know how many times I've had to do this over the past few years and it was ugly. This is definitely a life saver!

@CodeKJ

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@CodeKJ CodeKJ commented Feb 4, 2016

Exactly what I was looking for. Give this man a beer.

@mtanneb

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@mtanneb mtanneb commented Mar 11, 2016

Awesome!

@TwanoO67

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@TwanoO67 TwanoO67 commented May 11, 2016

Just tried over some nested objects/array and it didn't work.
But this does (not as elegant, but more effective):

`private function object_to_array($obj) {
if(is_object($obj)) $obj = (array) $this->dismount($obj);
if(is_array($obj)) {
$new = array();
foreach($obj as $key => $val) {
$new[$key] = $this->object_to_array($val);
}
}
else $new = $obj;
return $new;
}

//permet de changer les private en public, pour un meuilleur conversion des object en array
private function dismount($object) {
$reflectionClass = new ReflectionClass(get_class($object));
$array = array();
foreach ($reflectionClass->getProperties() as $property) {
$property->setAccessible(true);
$array[$property->getName()] = $property->getValue($object);
$property->setAccessible(false);
}
return $array;
}`

@mdeboer

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@mdeboer mdeboer commented Aug 7, 2016

@TwanoO67 I had the same issue when converting an array to object using the code below. It only converted the outer most array to object and not the nested arrays.

$object = json_decode(json_encode($array), false);

I solved this by using:

$object = json_decode(json_encode($array, JSON_FORCE_OBJECT), false);

I'm pretty sure the solution would be similar when converting from object to array.

@sajjad-dehghani

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@sajjad-dehghani sajjad-dehghani commented Aug 18, 2016

Awesome!

@ChristopherDosin

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@ChristopherDosin ChristopherDosin commented May 3, 2017

Mine too! 🥇

@inonbaguio

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@inonbaguio inonbaguio commented Jul 25, 2017

This will not be be applicable if the properties of the object you are trying to convert are declared as private

@christoferd

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@christoferd christoferd commented Oct 14, 2017

@mdeboer Thank you
That worked for me too

$object = json_decode(json_encode($array, JSON_FORCE_OBJECT), false);
@bonatoc

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@bonatoc bonatoc commented Jan 25, 2018

Thanks!
Works fine on PHP 5.3.29

@arnisjuraga

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@arnisjuraga arnisjuraga commented Jan 30, 2018

Nice!

@fendiseptiawan0709

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@fendiseptiawan0709 fendiseptiawan0709 commented Jul 21, 2018

@victorbstan thanks man.

@anver

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@anver anver commented Jul 29, 2018

@mdeboer Thank you
Saved ton of my time

@quasi635

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@quasi635 quasi635 commented Aug 8, 2018

I love the simplicity. Thank you!

@desjob

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@desjob desjob commented Oct 5, 2018

am i the only one here that minds the "wasted" cycles of json encoding + decoding?

@Okipa

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@Okipa Okipa commented Dec 10, 2018

In case of complex objects, you will have serious performance issues with json_decode(json_encode())

@yoshkinawa

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@yoshkinawa yoshkinawa commented Jun 16, 2019

Use this function to access also private and protected arguments

function obj2arr( $obj, $nestLevel = 0 ) {

// limit nesting level (for performance and not to go over the maximum)
if ( $nestLevel > 15 ) return;

// if current member is an object - turn it to an array
if( is_object( $obj ) ) $obj = (array) $obj;

// if current member is an array - recursively call this function to each of his children
if( is_array( $obj ) ) {

	$return = [];

	foreach( $obj as $key => $val ) {

		// correct private and protected key names
		$aux = explode ( "\0", $key );
		$newkey = $aux[ count( $aux ) - 1 ];
		$return[ $newkey ] = obj2arr( $val, $nestLevel + 1 );

	}

} else $return = $obj;

// return transformed object
return $return;

}

@scmrus

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@scmrus scmrus commented Aug 29, 2019

Use ArrayObject class and cast it to array (or use ArrayObject::getArrayCopy() instead). It's much much faster.

php > $x = [1, (object) ['x'=>'y'], 3];
php > var_dump($x);
array(3) {
  [0] =>
  int(1)
  [1] =>
  class stdClass#1 (1) {
    public $x =>
    string(1) "y"
  }
  [2] =>
  int(3)
}
php > var_dump((new ArrayObject($x))->getArrayCopy());
array(3) {
  [0] =>
  int(1)
  [1] =>
  class stdClass#1 (1) {
    public $x =>
    string(1) "y"
  }
  [2] =>
  int(3)
}
@c01nd01r

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@c01nd01r c01nd01r commented Sep 2, 2019

Use ArrayObject class and cast it to array (or use ArrayObject::getArrayCopy() instead). It's much much faster.

ArrayObject::getArrayCopy() return shallow copy of array.

@machitgarha

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@machitgarha machitgarha commented Sep 4, 2019

@scmrus and @c01nd01r
I actually understood this after trying it, but I forgot to remove the comment from here. Sorry.
BTW, a recursive function in PHP is faster than the JSON way.

@holtz-mb

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@holtz-mb holtz-mb commented Nov 16, 2019

Be care full if use encodings other than UTF-8. If you use that, json_encode will return false.

See here https://www.php.net/manual/de/function.json-encode.php#115733

@WhereJuly

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@WhereJuly WhereJuly commented Mar 25, 2020

This will not be be applicable if the properties of the object you are trying to convert are declared as private

You could always create the getter for the object like this (implemented in a form of an universal trait)

trait ThrowingGetter
{
    public function __get($propertyName)
    {
        if (property_exists($this, $propertyName)) {
            return $this->$propertyName;
        }
        throw new \UnexpectedValueException(sprintf('Niceprice: The property \'%s\' does not exist on %s class.', $propertyName, __CLASS__));
    }
}

And use it in as many objects as you like (use ThrowingGetter).

This way you keep your object immutable, read-only.

@WhereJuly

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@WhereJuly WhereJuly commented Mar 25, 2020

The initial

$array = json_decode(json_encode($object), true);

will not work straight like this if your nested objects are custom, not stdClass type objects. For this to work on these too you should implement JsonSerializable interface on your custom nested objects. See the respective PHP documentation.

@iam-raihan

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@iam-raihan iam-raihan commented Aug 3, 2020

just in case performance matters

function objectToArray($object)
{
if(!is_object($object) && !is_array($object)) {
return $object;
}

return array_map('objectToArray', (array) $object);

}

from SO

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