今天看到一个面试考题如下：- <?php
- class ExceptionA extends Exception { }
- class ExceptionB extends ExceptionA { }
- class ExceptionC extends ExceptionA { }
- try
- {
- try
- {
- try
- {
- throw new ExceptionB();
- }
- catch(ExceptionC $e)
- {
- echo "C";
- }
- }
- catch(ExceptionA $e)
- {
- echo "A";
- }
- }
- catch(ExceptionB $e)
- {
- echo "B";
- }
- ?>
|
