&lt;?php$i = 0;$x = $i++; $y = ++$i;print $x; print $y; ?&gt;
A. 02
B. 12
C. 01
D. 21
Answer:A
&lt;?php$i = 0;$x = $i++; $y = ++$i;print $x; print $y; ?&gt;
A. 02 B. 12 C. 01 D. 21
Explanation: First case i is incremented after setting x to i.