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());

Question

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());

Accepted Answer

C. Line B, to: public function &getX() {

Answer

A. No changes needed, the code would output 2 as is

Answer

B. Line A, to: protected &$x = array();

Answer

D. Line C, to: return &$this->x;

Answer

E. Line D, to: $a =& new A();

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 /…

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