dtone牛人大佬：
跑例子的时候提醒

1. Stack trace:
2. #0 {main}
3.   thrown in D:\phpStudy\www\1.php on line 15
5. Fatal error: Uncaught Error: Class ‘PhpParser\ParserFactory’ not found in D:\php
6. Study\www\1.php:15
7. Stack trace:
8. #0 {main}
9.   thrown in D:\phpStudy\www\1.php on line 15

网上资料太少，总感觉自己姿势不对。。希望大神能指点