Implement provincial/municipal drop-down cascade menus in json format [original]-orange time

Implement provincial/municipal drop-down cascade menus in json format [original]-orange time This article is original to the blogger. For more information, see.

First, let's take a look at the implementation:

Of course, to complete this experiment, mysql must be connected to the database. here we use navicat for mysql, which is highly compatible with mysql. the configuration environment is not described in detail, make sure to modify the php configuration file. ini file, replace mysql. remove the ";" before the dll, or the database connection function error will always be reported.

After the above configuration is complete, it enters the code stage. if you don't talk about it, go directly to the code:

// 2-7-3.php:
    
     Provincial/municipal menu