How to merge two php Doctrine 2 ArrayCollection()

Question

Is there any convenience method that allows me to concatenate two Doctrine ArrayCollection()? something like:

$collection1 = new ArrayCollection         


        

Answer 1

Using Clousures PHP5 > 5.3.0

$a = ArrayCollection(array(1,2,3));
$b = ArrayCollection(array(4,5,6));

$b->forAll(function($key,$value) use ($a){ $a[]=$value;return true;});

echo $a.toArray();

array (size=6) 0 => int 1 1 => int 2 2 => int 3 3 => int 4 4 => int 5 5 => int 6