The latest GB/T 2260 codes. Updated at 2013, published at 2014.
Add the following line to your composer.json file:
"cn/gb2260": "dev-master"
Then run composer update to get the package.
$gb2260 = new \GB2260\GB2260();
$gb2260->get(420822); // returns '湖北省 荆门市 沙洋县'This software is licensed under the MIT License.