&lt;?phpdefine&#40;&quot;VAR_NAME&quot;,&quot;test&quot;&#41;; $&#123;VAR_NAME&#125; = &quot;value&quot;; echo VAR_NAME;echo $&#123;VAR_NAME&#125;; ?&gt;
A. test
B. testtest
C. testvalue
D. ERROR, constant value cannot be changed
Answer:A
&lt;?phpdefine&#40;&quot;VAR_NAME&quot;,&quot;test&quot;&#41;; $&#123;VAR_NAME&#125; = &quot;value&quot;; echo VAR_NAME;echo $&#123;VAR_NAME&#125;; ?&gt;
A. test B. testtest C. testvalue D. ERROR, constant value cannot be changed
Explanation: ${VAR_NAME} creates a new variable which is not same as VAR_NAME.