&lt;?php$x = 4;$y = 3;function fun&#40;$x, $y&#41;&#123;    $z = $x + $y / $y + $x;    echo &quot;$z&quot;;&#125;echo $x;echo $y;echo $z; fun&#40;3, 4&#41;;?&gt;
A. 437
B. 439
C. 349
D. 347
Answer:A
&lt;?php$x = 4;$y = 3;function fun&#40;$x, $y&#41;&#123;    $z = $x + $y / $y + $x;    echo &quot;$z&quot;;&#125;echo $x;echo $y;echo $z; fun&#40;3, 4&#41;;?&gt;
A. 437 B. 439 C. 349 D. 347
Explanation: It is same as above but the value passed into the function is 3,4 and not 4,3. Therefore the difference in answer.