&lt;?php$b = 1;switch&#40;$b&#41;&#123;case 1.0:    print &quot;hi&quot;;    break;case 1:    print &quot;hello&quot;;    break;default:    print &quot;hi1&quot;;&#125;?&gt;
A. hihellohi1
B. hi
C. hihello
D. hello
Answer:A
&lt;?php$b = 1;switch&#40;$b&#41;&#123;case 1.0:    print &quot;hi&quot;;    break;case 1:    print &quot;hello&quot;;    break;default:    print &quot;hi1&quot;;&#125;?&gt;
A. hihellohi1 B. hi C. hihello D. hello
Explanation: Upcasting does happen in case,it compares it with 1.0 and thus prints hi and exits.