How to check that an object is empty in PHP?

Question

How to find if an object is empty or not in PHP.

Following is the code in which $obj is holding XML data. How can I check if it\'s empty or not?

Answer 1

Another possible solution which doesn't need casting to array:

// test setup
class X { private $p = 1; } // private fields only => empty
$obj = new X;
// $obj->x = 1;


// test wrapped into a function
function object_empty( $obj ){
  foreach( $obj as $x ) return false;
  return true;
}


// inline test
$object_empty = true;
foreach( $obj as $object_empty ){ // value ignored ... 
  $object_empty = false; // ... because we set it false
  break;
}


// test    
var_dump( $object_empty, object_empty( $obj ) );