&lt;?php    function A1&#40;$x&#41;    &#123;        switch&#40;$x&#41;        &#123;        case 1:             //this statement is the same as if($x == 1)            echo 'Case 1 was executed.';            break;        case 2:             //this statement is the same as if($x == 2)            echo 'Case 2 was executed.';            break;        case 3:             //this statement is the same as if($x == 3)            echo 'Case 3 was executed.';            break;        case 4:             //this statement is the same as if($x == 4)            echo 'Case 4 was executed.';            break;        default:             //this statement is the same as if $x does not equal the other conditions            echo 'Default was executed.';            break;&nbsp;        &#125;    &#125;    A1&#40;9&#41;;?&gt;
A. Case 1 was executed.
B. Case 2 was executed.
C. Default was executed.
D. Case 4 was executed.
Answer:A
&lt;?php    function A1&#40;$x&#41;    &#123;        switch&#40;$x&#41;        &#123;        case 1:             //this statement is the same as if($x == 1)            echo 'Case 1 was executed.';            break;        case 2:             //this statement is the same as if($x == 2)            echo 'Case 2 was executed.';            break;        case 3:             //this statement is the same as if($x == 3)            echo 'Case 3 was executed.';            break;        case 4:             //this statement is the same as if($x == 4)            echo 'Case 4 was executed.';            break;        default:             //this statement is the same as if $x does not equal the other conditions            echo 'Default was executed.';            break;&nbsp;        &#125;    &#125;    A1&#40;9&#41;;?&gt;
A. Case 1 was executed. B. Case 2 was executed. C. Default was executed. D. Case 4 was executed.
Explanation: the switch statement is executed with $x = 9.