In the following code, which line should be changed so it outputs the number 2: class A {
protected $x = array(); /* A */ public function getX() { /* B */ return $this->x; /* C */ } } $a =
new A(); /* D */ array_push($a->getX(), “one”); array_push($a->getX(), “two”); echo
count($a->getX());
A.
No changes needed, the code would output 2 as is
B.
Line A, to: protected &$x = array();
C.
Line B, to: public function &getX() {
D.
Line C, to: return &$this->x;
E.
Line D, to: $a =& new A();