Convert PHP object to associative array

Question

I'm integrating an API to my website which works with data stored in objects while my code is written using arrays.

I'd like a quick and dirty function to convert an object to an array.

Answer 1

First of all, if you need an array from object you probably should constitutes the data as array first. Think about it.

Don't use foreach statement or JSON transformations. If you're planning this, again you're working with a data structure, not with an object.

If you really need it use object orientated approach to have a clean and maintable code. For example:

Object as array

class PersonArray implements \ArrayAccess, \IteratorAggregate
{
    public function __construct(Person $person) {
        $this->person = $person;
    }
    // ...
 }

If you need all properties use transfer object

class PersonTransferObject
{
    private $person;

    public function __construct(Person $person) {
        $this->person = $person;
    }

    public function toArray() {
        return [
            // 'name' => $this->person->getName();
        ];
    }

 }

Answer 2

Short solution of @SpYk3HH

function objectToArray($o)
{
    $a = array();
    foreach ($o as $k => $v)
        $a[$k] = (is_array($v) || is_object($v)) ? objectToArray($v): $v;

    return $a;
}

Answer 3

$Menu = new Admin_Model_DbTable_Menu(); 
$row = $Menu->fetchRow($Menu->select()->where('id = ?', $id));
$Addmenu = new Admin_Form_Addmenu(); 
$Addmenu->populate($row->toArray());

Answer 4

All other answers posted here are only working with public attributes. Here is one solution that works with javabean-like objects using reflection and getters:

function entity2array($entity, $recursionDepth = 2) {
    $result = array();
    $class = new ReflectionClass(get_class($entity));
    foreach ($class->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
        $methodName = $method->name;
        if (strpos($methodName, "get") === 0 && strlen($methodName) > 3) {
            $propertyName = lcfirst(substr($methodName, 3));
            $value = $method->invoke($entity);

            if (is_object($value)) {
                if ($recursionDepth > 0) {
                    $result[$propertyName] = $this->entity2array($value, $recursionDepth - 1);
                } else {
                    $result[$propertyName] = "***";     //stop recursion
                }
            } else {
                $result[$propertyName] = $value;
            }
        }
    }
    return $result;
}

Answer 5

From the first Google hit for "php object to assoc array" we have this:

function object_to_array($data)
{
    if (is_array($data) || is_object($data))
    {
        $result = array();
        foreach ($data as $key => $value)
        {
            $result[$key] = object_to_array($value);
        }
        return $result;
    }
    return $data;
}

Source at codesnippets.joyent.com.

Answer 6

You can also create function in PHP to convert object array.

function object_to_array($object) {
    return (array) $object;
}