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Exam 200-550 topic 1 question 88 discussion

Actual exam question from Zend's 200-550
Question #: 88
Topic #: 1
[All 200-550 Questions]

What is the output of the following code?
class a
{
public $val;
}
function renderVal (a $a)
{
if ($a) {
echo $a->val;
}
}
renderVal (null);

  • A. A syntax error in the function declaration line
  • B. An error, because null is not an instance of 'a'
  • C. Nothing, because a null value is being passed to renderVal()
  • D. NULL
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Suggested Answer: B 🗳️
by Sgeleon at May 1, 2021, 10:38 a.m.

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Sgeleon
3 years, 6 months ago
class a { public $val; } function renderVal (a $a) { if ($a) { echo $a->val; } } renderVal (null);
upvoted 1 times
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