The mysql_info function returns information about the last query.
函数的作用是：取得最近一条查询的信息。
This function returns information about the statement on success, or FALSE on failure.
如果函数执行成功，它将返回陈述语句的信息；如果执行失败将返回False。
Returns information about the URL path that is associated with the route.
返回与路由关联的URL路径的相关信息。
Returns information about the URL path that is associated with the route.
返回与路由关联的URL路径的相关信息。
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