&lt;?phpswitch&#40;$b&#41;&#123;case 2:    print &quot;hello&quot;;    break;case 1:    print &quot;hi&quot;;    break;&#125;?&gt;
A. hello
B. hi
C. no output
D. error
Answer:A
&lt;?phpswitch&#40;$b&#41;&#123;case 2:    print &quot;hello&quot;;    break;case 1:    print &quot;hi&quot;;    break;&#125;?&gt;
A. hello B. hi C. no output D. error
Explanation: If that case does not exist then it searches for default and on not finding it does nothing.