没有影响 没有块作用域，但是把块写短一点，避免无意识的重名，便于观察；把长的块写成函数，就有局部作用域了！
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知识点：getElementById 根据ID获取元素getElementsByName 根据name属性获取元素getE...
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<?php /** * Created by PhpStorm. * User: hp * Dat...
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<?php //使用usort()对一个二维数组进行排序?(提示:要用到比较函数) $house=[ ['name'=>&#...
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<html><head><title>404</title></head><body><div>您打开的页面已经丢失...
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<!DOCTYPE html> <html> <head> <meta charset="utf-8" /&...
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/...
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<?phpnamespace app\admin\controller;use app\admin\model\SystemModel;use think\facade\Request;use ...
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<?phpnamespace app\admin\controller;use app\admin\controller\Common;use app\admin\model\ProductMo...
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<?php/** * Created by PhpStorm. * User: Administrator * Date: 2018/7/23 * Time: 10:44 */namespace...
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<!DOCTYPE><html><head> <title>Load page</title> &nb...
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<!DOCTYPE html><html><head> <meta charset="UTF-8">&nb...
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<!DOCTYPE html><html><head> <meta charset="UTF-8"/>&n...
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<?php namespace app\admin\controller; use app\admin\controller\Common; use app\adm...
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