如何在PHP中将对象转换为关联数组？

Question

As title suggests, My question is that how i can convert a php class to an associative array? For example I've

class MyObject {
  private $size = null;
  private $length = null;
  private $width = null;

    public function getSize(){
        return $this->size;
    }

    public function setSize($size){
        $this->size = $size;
    }

    public function getLength(){
        return $this->length;
    }

    public function setLength($length){
        $this->length = $length;
    }

    public function getWidth(){
        return $this->width;
    }

    public function setWidth($width){
        $this->width = $width;
    }

}

//Now what i want is following

$abc = new MyObject();
$abc->width = 10;
$anArray = someFunction($abc);  
//This should generate an associative array
//Now associative array is accessible
echo $anArray['width]; // 10

Answer 1

There are two ways that work slightly differently.

You can cast to an array:

$array = (array)$object;

there's a chapter on details and side-effects in the PHP manual

or use get_object_vars() .

See this question about the differences.