Fatal error: Uncaught Exception: Got error 'repetition-operator operand invalid' from regexp query: SELECT * FROM www_keyword WHERE keyword regexp 'C语言与C++有哪些不同' ORDER BY id DESC in /www/wwwroot/zjgpx.com/info/hd/config/MysqliDb.php:1926 Stack trace: #0 /www/wwwroot/zjgpx.com/info/hd/config/MysqliDb.php(1519): MysqliDb->_prepareQuery() #1 /www/wwwroot/zjgpx.com/info/hd/config/MysqliDb.php(686): MysqliDb->_buildQuery() #2 /www/wwwroot/zjgpx.com/info/hd/pc/news_show.php(56): MysqliDb->get() #3 {main} thrown in /www/wwwroot/zjgpx.com/info/hd/config/MysqliDb.php on line 1926