Detailed explanation of the code for implementing the points system in the PHP forum

First define a points field in the user table;

Then create a level table. The main fields include level name, upper limit points and lower limit points;

Then accumulate points based on the user's behavior;

Finally, determine the level range of the user's points to determine the user level.

Related learning recommendations: PHP programming from entry to proficiency

##User table

CREATE TABLE `bbs`.`user`(
 `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT comment '用户id',
 `avatar` VARCHAR(255) NOT NULL comment '头像',
 `nickname` VARCHAR(60) NOT NULL comment '昵称',
 `username` VARCHAR(16) NOT NULL comment '用户名',
 `password` CHAR(32) NOT NULL comment '密码',
 `points` INT(10) NOT NULL DEFAULT '0' comment '积分',
 PRIMARY KEY(`id`)
) ENGINE = MYISAM;

Level table

CREATE TABLE `bbs`.`level`(
 `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT comment '等级id',
 `name` VARCHAR(60) NOT NULL comment '等级名',
 `max_points` INT(10) UNSIGNED NOT NULL comment '积分上限',
 `min_points` INT(10) UNSIGNED NOT NULL comment '积分下限',
 PRIMARY KEY(`id`)
) ENGINE = MYISAM;

ps: Let’s take a look at the method of deleting pictures in thinkphp

Usage scenarios:

New avatar replaces the old one

Steps:

1. Read the URL address of the database avatar

2 . Get the valid fields of the URL address

3. File file path setting

4. Delete the image file

Thinkphp code is as follows:

<?php
public function delPic(){
  //获取用户id
  $uid = input(&#39;uid&#39;);
  if(!$uid){
    $this->error(&#39;uid未获取&#39;);
  }
  //获取url
  $img = M(&#39;member&#39;)->where(&#39;uid&#39;,$uid);
  $url = $img->avatar; //$url = &#39;http://www.test.com/up/avatar/59b25bcfcaac6.jpg&#39;
  if(!$url){
    $this->error(&#39;获取头像失败&#39;);
  }
  //获取url有效字段（去掉网址）
  $str = parse_url($url)[&#39;path&#39;].parse_url($url)[&#39;query&#39;];//$str = &#39;/up/avatar/59b25bcfcaac6.jpg&#39;
  //file文件路径
  $filename = &#39;.&#39;.$str;
  //删除
  if(file_exists($filename)){    
    unlink($filename);
    $info = &#39;原头像删除成功&#39;;
  }else{
    $info = &#39;未找到原头像&#39;.$filename;
  }
  echo $info;
}

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