&lt;?phpecho $x-- != ++$x;?&gt;
A. 1
B. 0
C. error
D. no output
Answer:A
&lt;?phpecho $x-- != ++$x;?&gt;
A. 1 B. 0 C. error D. no output
Explanation: Automatically x is declared and initialized to 0,then decremented and compared with its increments, thus returns 1.