&lt;?php$a  =  '12345';print &quot;qwe&quot;.$a.&quot;rty&quot;;?&gt;
A. qwe12345rty
B. qwe$arty
C. error
D. no output
Answer:A
&lt;?php$a  =  '12345';print &quot;qwe&quot;.$a.&quot;rty&quot;;?&gt;
A. qwe12345rty B. qwe$arty C. error D. no output
Explanation: . dereferences the variable/string within.