- var_dump: documentation ( source)
- get_parent_class: documentation ( source)
<?php
function getGrandParentClass($object, $level = NULL)
{
$gp = $object = get_class($object);
$isNull = is_null($level);
$j = 0;
while(get_parent_class($gp) && ($isNull || $level > $j))
{
$gp = get_parent_class($gp);
$j++;
if(!get_parent_class($gp) && !$isNull && $level > $j)
return false;
}
return $gp == $object ? false : $gp;
}
class A {}
class B extends A {}
class C extends B {}
class D extends C {}
var_dump(getGrandParentClass(new A())); // false
var_dump(getGrandParentClass(new D(), [-1]));