--TEST--
Test array_map() function : object functionality - class methods as callback function
--FILE--
<?php
class ParentClass
{
    public $var1 = 10;
    public static function staticParent1($n)
    {
        return $n;
    }
    private static function staticParent2($n)
    {
        return $n;
    }
}
class ChildClass extends ParentClass
{
    var $parent_obj;
    public function __construct()
    {
        $this->parent_obj = new ParentClass();
    }
    public $var2 = 5;
    public static function staticChild($n)
    {
        return $n;
    }
    public function nonstaticChild($n)
    {
        return $n;
    }
}
function main()
{
    /*
     * Testing array_map() for object functionality with following callback function variations:
     *   1) child class method using parent object
     *   2) parent class method using child object
     *   3) child class method using parent class
     *   4) parent class method using child class
     */
    echo "*** Testing array_map() : class methods as callback function ***\n";
    $arr1 = array(1, 5, 7);
    $childobj = new ChildClass();
    $parentobj = new ParentClass();
    echo "-- accessing parent method from child class --\n";
    var_dump(array_map(array('ChildClass', 'staticParent1'), $arr1));
    echo "-- accessing child method from parent class --\n";
    try {
        var_dump(array_map(array('ParentClass', 'staticChild'), $arr1));
    } catch (TypeError $e) {
        echo $e->getMessage(), "\n";
    }
    echo "-- accessing parent method using child class object --\n";
    var_dump(array_map(array($childobj, 'staticParent1'), $arr1));
    echo "-- accessing child method using parent class object --\n";
    try {
        var_dump(array_map(array($parentobj, 'staticChild'), $arr1));
    } catch (TypeError $e) {
        echo $e->getMessage(), "\n";
    }
    echo "Done";
}
?>
--EXPECT--
*** Testing array_map() : class methods as callback function ***
-- accessing parent method from child class --
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(5)
  [2]=>
  int(7)
}
-- accessing child method from parent class --
array_map(): Argument #1 ($callback) must be a valid callback or null, class ParentClass does not have a method "staticChild"
-- accessing parent method using child class object --
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(5)
  [2]=>
  int(7)
}
-- accessing child method using parent class object --
array_map(): Argument #1 ($callback) must be a valid callback or null, class ParentClass does not have a method "staticChild"
Done