wordpress为用户添加积分的实现

提示：代码供参考。

思路梳理:

1. 需要准备两个数据表。

(1) 积分动态表，用来记录所有用户的积分增减情况。

(2) 用户积分总表，用来记录用户的积分总量，当然用户积分总数可以记录到usermeta数据表中，所以这个表不是必须的。

2. 后台需要3个页面。

(1) 积分动态，从“积分动态表”中获取数据，展示用户积分动态。

(2) 用户积分，从“用户积分表”中获取数据，方便查看用户的积分总量。

(3) 积分增减页面，用于给用户增减积分。

一、新建数据表。

1. 积分动态表points_activity中的字段有id，用户id，积分(异动数)，描述，余额，时间。

2. 用户积分表points中的字段就两个：用户id，积分数。

//在第一次启用主题时执行。
function ashuwp_load_theme() {
  global $pagenow;
  if ( is_admin() && 'themes.php' == $pagenow && isset( $_GET['activated'] ) ){
    ashuwp_points_install();
  }
}
add_action( 'load-themes.php', 'ashuwp_load_theme' );
//新建数据表points_activity和points
function ashuwp_points_install(){
  global $wpdb;
  $table_name = $wpdb->prefix . 'points_activity'; //积分动态表
  $table_name2 = $wpdb->prefix . 'points'; //积分汇总表
  $charset_collate = $wpdb->get_charset_collate();
  if( $wpdb->get_var("SHOW TABLES LIKE '$table_name'") != $table_name ) :
    $sql = " CREATE TABLE `".$table_name."` (
      `id` BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
      `user_id` BIGINT(40),
      `points` INT NOT NULL,
      `description` longtext,
      `balance` INT NOT NULL,
      `date` DATETIME NOT NULL
      ) $charset_collate;";
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);
  endif;
  if( $wpdb->get_var("SHOW TABLES LIKE '$table_name2'") != $table_name2 ) :
    $sql2 = " CREATE TABLE `".$table_name2."` (
      `user_id` BIGINT(40) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
      `points` INT NOT NULL
    ) $charset_collate;";
    dbDelta($sql2);
  endif;
}

二、数据库操作函数

先是对用户积分表points的操作，用户积分所需要的操作仅需要更新、获取两个操作。

//根据用户id获取某个用户的积分数
function ashuwp_get_user_points($user_id){
  global $wpdb;
  $user = get_user_by('ID', $user_id);
  if(!$user){
    return 0;
  }
  $points_table = $wpdb->prefix . 'points';
  $sql = "select points from ".$points_table." where user_id={$user_id}";
  $result = $wpdb->get_var($sql);
  if(!$result){
    return 0;
  }else{
    return $result;
  }
}
//更新(新增)用户积分.
function ashuwp_update_user_points($user_id, $new_points){
  global $wpdb;
  $user = get_user_by('ID', $user_id);
  if(!$user){
    $msg = array(
      'state' => 'error',
      'msg' => 'User Error',
    );
    return $msg;
  }
  if( !is_numeric($new_points)|| $new_points<0){
    $msg = array(
      'state' => 'error',
      'msg' => 'Points not number or points error',
    );
    return $msg;
  }
  $points_table = $wpdb->prefix . 'points';
  $points_exist = $wpdb->get_var( "select count(*) from {$points_table} where user_id='{$user_id}'" );
  if($points_exist){
    $sql = "update {$points_table} set points='{$new_points}' where user_id='{$user_id}'";
  }else{
    $sql = "insert into {$points_table} ( user_id, points ) values( '{$user_id}', '{$new_points}' )";;
  }
  $result = $wpdb->query($sql);
  if($result){
    $msg = array(
      'state' => 'succeed',
      'msg' => 'Points Updated.',
    );
    return $msg;
  }else{
    $msg = array(
      'state' => 'error',
      'msg' => 'Points update failed.',
    );
    return $msg;
  }
}
//从用户积分表获取数据，后台积分汇总页面需要获取数据。
function ashuwp_get_points( $args=array() ){
  global $wpdb;
  $defaults = array(
    'per_page' => '50',
    'paged' => '1',
  );
  $args = wp_parse_args( $args, $defaults );
  $page = (int)$args['paged'];
  $per_page = (int)$args['per_page'];
  if(!$page){
    $page = 1;
  }
  if(!$per_page){
    $per_page = 50;
  }
  $begin = $per_page*($page-1);
  $end = $per_page*$page;
  $points_table = $wpdb->prefix . 'points';
  $sql = "select * from $points_table order by user_id asc limit $begin,$end";
  $results = $wpdb->get_results($sql,'ARRAY_A');
  return $results;
}
//统计数据条数，后台积分汇总页面需要获取数据。
function ashuwp_count_points(){
  global $wpdb;
  $points_table = $wpdb->prefix . 'points';
  $sql = "select count(*) from $points_table";
  $results = $wpdb->get_var($sql);
  return $results;
}

然后是对积分动态表的操作仅需要增加即可，不需要删除。

/*增加入一条积分动态*/
function ashuwp_add_points_activity( $args=array() ){
  global $wpdb;
  $defaults = array(
    'user_id' => '',
    'action' => '',
    'points' => '',
    'description' => '',
    'date' => ''
  );
  $args = wp_parse_args( $args, $defaults );
  //判断用户id是否合法
  $user = get_user_by('ID', $args['user_id']);
  if(!$user){
    $msg = array(
      'state' => 'error',
      'msg' => 'User Error',
    );
    return $msg;
  }
  //仅增加和减少两种操作。
  if( !in_array( $args['action'], array( 'add', 'reduce' ) )){
    $msg = array(
      'state' => 'error',
      'msg' => 'Operate Error',
    );
    return $msg;
  }
  //检测积分异动数是否合法
  if( !is_int($args['points']) ){
    $msg = array(
      'state' => 'error',
      'msg' => 'Points Error',
    );
    return $msg;
  }
  //处理描述
  $args['description'] = sanitize_text_field($args['description']);
  //处理异动数，和计算余额
  $old_points = (int)ashuwp_get_user_points($args['user_id']);
  if($args['action']=='add'){
    $balance = $old_points+$args['points'];
    $change = $args['points'];
    if($balance!=$old_points){
      //将新余额更新到用户积分表。
      $update = ashuwp_update_user_points($args['user_id'],$balance);
    }
  }
  if($args['action']=='reduce'){
    $balance = $old_points-$args['points'];
    $change = -$args['points']; //若是减少，数据库中保存为负数。
    if($balance!=$old_points){
      $update = ashuwp_update_user_points($args['user_id'],$balance);
    }
  }
  if( ($balance!=$old_points) && $update['state'] != 'succeed' ){
    $msg = array(
      'state' => 'error',
      'msg' => $update['msg'],
    );
    return $msg;
  }
  $table_name = $wpdb->prefix . 'points_activity';
  //插入数据
  $args['date'] = date( "Y-m-d H:i:s", time());
  $sql = "insert into $table_name ( user_id, points, description, balance, date ) values( '{$args['user_id']}', '{$change}', '{$args['description']}', '{$balance}', '{$args['date']}' )";
  $result = $wpdb->query($sql);
  if($result){
    $msg = array(
      'state' => 'succeed',
      'msg' => 'succeed!',
    );
    return $msg;
  }else{
    //若动态插入失败，将用户积分表回滚。
    ashuwp_update_user_points($args['user_id'],$old_points);
    $msg = array(
      'state' => 'error',
      'msg' => 'Insert Error',
    );
    return $msg;
  }
}
/*从积分动态表中获取数据，后台页面中需要。
* 需支持条件查询方便后台管理。
*/
function ashuwp_get_points_activity( $args=array() ){
  global $wpdb;
  $defaults = array(
    'user_id' => '',
    'per_page' => '50',
    'paged' => '1',
    'action' => ''
  );
  $args = wp_parse_args( $args, $defaults );
  //处理页码
  $page = (int)$args['paged'];
  $per_page = (int)$args['per_page'];
  if(!$page){
    $page = 1;
  }
  if(!$per_page){
    $per_page = 50;
  }
  $begin = $per_page*($page-1);
  $end = $per_page*$page;
  $table_name = $wpdb->prefix . 'points_activity';
  $sql = "select * from $table_name where 1=1 ";
  //查询用户id
  if($args['user_id']!=''){
    $user_id = (int)$args['user_id'];
    $sql .= "and user_id='{$user_id}' ";
  }
  //查询操作种类
  if( in_array( $args['action'], array( 'add', 'reduce', 'remain' ) ) ){
    if($args['action']=='add'){
      $sql .= "and points>0 ";
    }
    if($args['action']=='reduce'){
      $sql .= "and points<0 ";
    }
    if($args['action']=='remain'){
      $sql .= "and points=0 ";
    }
  }
  $sql .= "order by id desc limit $begin,$end";
  $results = $wpdb->get_results($sql,'ARRAY_A');
  return $results;
}
/*统计积分动态的记录数
* 加入统计条件方便后台管理
*/
function ashuwp_count_points_activity( $args=array() ){
  global $wpdb;
  $defaults = array(
    'user_id' => '',
    'action' => ''
  );
  $args = wp_parse_args( $args, $defaults );
  $table_name = $wpdb->prefix . 'points_activity';
  $sql = "select count(*) from $table_name where 1=1 ";
  //统计用户
  if($args['user_id']!=''){
    $user_id = (int)$args['user_id'];
    $sql .= "and user_id='{$user_id}' ";
  }
  //统计操作
  if( in_array( $args['action'], array( 'add', 'reduce', 'remain' ) ) ){
    if($args['action']=='add'){
      $sql .= "and points>0 ";
    }
    if($args['action']=='reduce'){
      $sql .= "and points<0 ";
    }
    if($args['action']=='remain'){
      $sql .= "and points=0 ";
    }
  }
  $results = $wpdb->get_var($sql);
  return $results;
}

三、建立后台页面

1. 积分动态页面。

后台页面设计到class-wp-list-table类的应用，就不一一加注释了。

if(!class_exists('WP_List_Table')) {
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class Ashuwp_Points_Activity_Table extends WP_List_Table {
  function __construct(){
    parent::__construct( array(
      'singular'  => 'Points Activity',
      'plural'    => 'Points Activity',
      'ajax'      => false
    ) );
  }
  function column_default( $item, $column_name ) {
    switch ( $column_name ){
      case 'id':
      case 'user':
      case 'points':
      case 'balance':
      case 'description':
      case 'date':
        return $item[ $column_name ];
      default:
        return print_r($item,true);
    }
  }
  function get_columns() {
    $columns = array(
      'id'       => 'ID',
      'user'    => 'User',
      'points'      => 'Points',
      'balance'     => 'Balance',
      'description' => 'Description',
      'date'    => 'Date',
    );
    return $columns;
  }
  function format_activity( $datas ) {
    $return_datas = array();
    foreach( $datas as $data ){
      $user = get_user_by('id', $data['user_id']);
      $item_array = array();
      $item_array['id'] = $data['id'];
      $item_array['user'] = $user->user_login;
      if($data['points']<0){
        $item_array['points'] = '<span class="reduce">'.$data['points'].'</span>';
      }elseif($data['points']>0){
        $item_array['points'] = '<span class="add">+'.$data['points'].'</span>';
      }else{
        $item_array['points'] = '<span class="remain">'.$data['points'].'</span>';
      }
      $item_array['description'] = $data['description'];
      $item_array['balance'] = $data['balance'];
      $item_array['date'] = $data['date'];
      $return_datas[] = $item_array;
    }
    return $return_datas;
  }
  function prepare_items() {
    $this->_column_headers = $this->get_column_info();
    $per_page     = $this->get_items_per_page( 'customers_per_page', 50 );
    $current_page = $this->get_pagenum();
    $total_items  = 0;
    $args = array(
      'per_page' => $per_page,
      'paged' => $current_page,
    );
    if( isset( $_GET['user_name'] ) && !empty( trim($_GET['user_name']) ) ){
      $user = get_user_by( 'login', trim($_GET['user_name']) );
      if( !empty($user)){
        $args['user_id'] = $user->ID;
      }
    }
    if( isset( $_GET['action_name'] ) && !empty( trim($_GET['action_name']) ) ){
      if( in_array( $_GET['action_name'], array( 'add', 'reduce', 'remain' ) ) ){
        $args['action'] = $_GET['action_name'];
      }
    }
    $total_items  = ashuwp_count_points_activity($args);
    $datas = ashuwp_get_points_activity($args);
    $this->items = $this->format_activity($datas);
    $this->set_pagination_args( array(
      'total_items' => $total_items,
      'per_page'    => $per_page,
      'total_pages' => ceil($total_items/$per_page)
    ) );
  }
}
class ashuwp_points_activity_admin {
  static public $instance;
  public $points_activity_obj;
  private function __construct(){
    add_filter( 'set-screen-option', array( $this, 'set_screen' ), 10, 3 );
    add_action( 'admin_menu', array( $this, 'ashuwp_points_activity_menu') );
  }
  private function __clone() {
  }
  function ashuwp_points_activity_menu() {
    //svg图
    $dollor_ico = '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';
    //建立积分动态页面
    $hook = add_menu_page( 'Points Activity', 'Points Activity', 'manage_options', 'points_activity', array(&$this, 'points_activity_list'),'data:image/svg+xml;base64,'.$dollor_ico, 9);
    add_action( "load-$hook", array( $this, 'screen_option' ) );
  }
  function set_screen( $status, $option, $value ) {
    return $value;
  }
  function screen_option() {
    $option = 'per_page';
    $args   = array(
      'label'   => 'Customers',
      'default' => 30,
      'option'  => 'customers_per_page'
    );
    add_screen_option( $option, $args );
    $this->points_activity_obj = new Ashuwp_Points_Activity_Table();
  }
  function points_activity_list(){
    $all = ashuwp_count_points_activity();
    $points_add = ashuwp_count_points_activity( array( 'action'=>'add' ) );
    $points_reduce = ashuwp_count_points_activity( array( 'action'=>'reduce' ) );
    $points_remain = ashuwp_count_points_activity( array( 'action'=>'remain' ) );
  ?>
    <div class="wrap">
      <h1 class="wp-heading-inline">Points Activity</h1>
      <a href="<?php echo admin_url( 'admin.php?page=points_activity_add' ); ?>" class="page-title-action">Add/Reduce</a>
      <?php
      if ( ! empty( $_GET['user_name'] ) ) {
        printf( '<span class="subtitle">' . __('Search results for &#8220;%s&#8221;') . '</span>', esc_html( $_GET['user_name'] ) );
      }
      ?>
      <hr class="wp-header-end">
      <ul class="subsubsub">
        <?php
        if( !empty( $_GET['action_name'] ) && in_array( trim($_GET['action_name']), array( 'add', 'reduce', 'remain' ) ) ){
          $now = trim($_GET['action_name']);
        }else{
          $now = 'all';
        }
        $current = 'class="current"';
        ?>
        <li class="all"><a <?php if($now=='all'){ echo $current; } ?> href="<?php echo admin_url( 'admin.php?page=points_activity' ); ?>">All<span class="count">(<?php echo $all; ?>)</span></a> |</li>
        <li class="add"><a <?php if($now=='add'){ echo $current; } ?> href="<?php echo admin_url( 'admin.php?page=points_activity&action_name=add' ); ?>">Add<span class="count">(<?php echo $points_add; ?>)</span></a> |</li>
        <li class="reduce"><a <?php if($now=='reduce'){ echo $current; } ?> href="<?php echo admin_url( 'admin.php?page=points_activity&action_name=reduce' ); ?>">Reduce<span class="count">(<?php echo $points_reduce; ?>)</span></a> |</li>
        <li class="remain"><a <?php if($now=='remain'){ echo $current; } ?> href="<?php echo admin_url( 'admin.php?page=points_activity&action_name=remain' ); ?>">Remain<span class="count">(<?php echo $points_remain; ?>)</span></a></li>
      </ul>
      <form id="points-activity-filter" method="get" action="">
        <style>
        th.column-id,
        td.column-id,
        th.column-user,
        td.column-user,
        th.column-points,
        td.column-points,
        th.column-balance,
        td.column-balance {
          width:10%;
        }
        .column-points .add {
          color:#46b450;
        }
        .column-points .reduce {
          color:#e74c3c;
        }
        </style>
        <p class="search-box">
          <label class="screen-reader-text" for="code-search-input">User Search</label>
          <input type="search" id="code-search-input" name="user_name" value="" />
          <?php submit_button( 'Search', 'button', false, false, array('id' => 'search-submit') ); ?>
          <input type="hidden" name="page" value="points_activity" />
        </p>
        <?php
        $this->points_activity_obj->prepare_items();
        $this->points_activity_obj->display();
        ?>
      </form>
    </div>
  <?php
  }
  public static function get_instance() {
    if ( ! isset( self::$instance ) ) {
      self::$instance = new self();
    }
    return self::$instance;
  }
}
ashuwp_points_activity_admin::get_instance();

2. 用户积分页面

与积分动态页面类似，用户积分页面也需要用表格展示，也不一一注释。

if(!class_exists('WP_List_Table')) {
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class Ashuwp_User_Points_Table extends WP_List_Table {
  function __construct(){
    parent::__construct( array(
      'singular'  => 'User Points',
      'plural'    => 'User Points',
      'ajax'      => false
    ) );
  }
  function column_default( $item, $column_name ) {
    switch ( $column_name ){
      case 'user_id':
      case 'user_login':
      case 'points':
        return $item[ $column_name ];
      default:
        return print_r($item,true);
    }
  }
  function get_columns() {
    $columns = array(
      'user_id'       => 'User ID',
      'user_login'    => 'User Name',
      'points'      => 'Points',
    );
    return $columns;
  }
  function format_datas( $datas ) {
    $return_datas = array();
    foreach( $datas as $data ){
      $user = get_user_by('id', $data['user_id']);
      $item_array = array();
      $item_array['user_id'] = $data['user_id'];
      $item_array['user_login'] = $user->user_login;
      $item_array['points'] = $data['points'];
      $return_datas[] = $item_array;
    }
    return $return_datas;
  }
  function prepare_items() {
    $this->_column_headers = $this->get_column_info();
    $per_page     = $this->get_items_per_page( 'customers_per_page', 50 );
    $current_page = $this->get_pagenum();
    $total_items  = 0;
    $args = array(
      'per_page' => $per_page,
      'paged' => $current_page,
    );
    $total_items  = ashuwp_count_points();
    $datas = ashuwp_get_points($args);
    $this->items = $this->format_datas($datas);
    $this->set_pagination_args( array(
      'total_items' => $total_items,
      'per_page'    => $per_page,
      'total_pages' => ceil($total_items/$per_page)
    ) );
  }
}
class ashuwp_user_points_admin {
  static public $instance;
  public $user_points_obj;
  private function __construct(){
    add_filter( 'set-screen-option', array( $this, 'set_screen' ), 10, 3 );
    add_action( 'admin_menu', array( $this, 'ashuwp_user_points_menu') );
  }
  private function __clone() {
  }
  function ashuwp_user_points_menu() {
    $hook = add_submenu_page('points_activity', 'User Points', 'User Points', 'manage_options', 'user_points', array(&$this, 'user_points'));
    add_action( "load-$hook", array( $this, 'screen_option' ) );
  }
  function set_screen( $status, $option, $value ) {
    return $value;
  }
  function screen_option() {
    $option = 'per_page';
    $args   = array(
      'label'   => 'Customers',
      'default' => 30,
      'option'  => 'customers_per_page'
    );
    add_screen_option( $option, $args );
    $this->user_points_obj = new Ashuwp_User_Points_Table();
  }
  function user_points(){
    $all = ashuwp_count_points();
  ?>
    <div class="wrap">
      <h1 class="wp-heading-inline">User Points</h1>
      <a href="<?php echo admin_url( 'admin.php?page=points_activity_add' ); ?>" class="page-title-action">Add/Reduce</a>
      <hr class="wp-header-end">
      <ul class="subsubsub">
        <li class="all"><a class="current" href="<?php echo admin_url( 'admin.php?page=user_points' ); ?>">All<span class="count">(<?php echo $all; ?>)</span></a></li>
      </ul>
      <form id="points-activity-filter" method="get">
        <?php
        $this->user_points_obj->prepare_items();
        $this->user_points_obj->display();
        ?>
      </form>
    </div>
  <?php
  }
  public static function get_instance() {
    if ( ! isset( self::$instance ) ) {
      self::$instance = new self();
    }
    return self::$instance;
  }
}
ashuwp_user_points_admin::get_instance();

3. 积分增减页面

if(!class_exists('WP_List_Table')) {
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class Ashuwp_User_Points_Table extends WP_List_Table {
  function __construct(){
    parent::__construct( array(
      'singular'  => 'User Points',
      'plural'    => 'User Points',
      'ajax'      => false
    ) );
  }
  function column_default( $item, $column_name ) {
    switch ( $column_name ){
      case 'user_id':
      case 'user_login':
      case 'points':
        return $item[ $column_name ];
      default:
        return print_r($item,true);
    }
  }
  function get_columns() {
    $columns = array(
      'user_id'       => 'User ID',
      'user_login'    => 'User Name',
      'points'      => 'Points',
    );
    return $columns;
  }
  function format_datas( $datas ) {
    $return_datas = array();
    foreach( $datas as $data ){
      $user = get_user_by('id', $data['user_id']);
      $item_array = array();
      $item_array['user_id'] = $data['user_id'];
      $item_array['user_login'] = $user->user_login;
      $item_array['points'] = $data['points'];
      $return_datas[] = $item_array;
    }
    return $return_datas;
  }
  function prepare_items() {
    $this->_column_headers = $this->get_column_info();
    $per_page     = $this->get_items_per_page( 'customers_per_page', 50 );
    $current_page = $this->get_pagenum();
    $total_items  = 0;
    $args = array(
      'per_page' => $per_page,
      'paged' => $current_page,
    );
    $total_items  = ashuwp_count_points();
    $datas = ashuwp_get_points($args);
    $this->items = $this->format_datas($datas);
    $this->set_pagination_args( array(
      'total_items' => $total_items,
      'per_page'    => $per_page,
      'total_pages' => ceil($total_items/$per_page)
    ) );
  }
}
class ashuwp_user_points_admin {
  static public $instance;
  public $user_points_obj;
  private function __construct(){
    add_filter( 'set-screen-option', array( $this, 'set_screen' ), 10, 3 );
    add_action( 'admin_menu', array( $this, 'ashuwp_user_points_menu') );
  }
  private function __clone() {
  }
  function ashuwp_user_points_menu() {
    $hook = add_submenu_page('points_activity', 'User Points', 'User Points', 'manage_options', 'user_points', array(&$this, 'user_points'));
    add_action( "load-$hook", array( $this, 'screen_option' ) );
  }
  function set_screen( $status, $option, $value ) {
    return $value;
  }
  function screen_option() {
    $option = 'per_page';
    $args   = array(
      'label'   => 'Customers',
      'default' => 30,
      'option'  => 'customers_per_page'
    );
    add_screen_option( $option, $args );
    $this->user_points_obj = new Ashuwp_User_Points_Table();
  }
  function user_points(){
    $all = ashuwp_count_points();
  ?>
    <div class="wrap">
      <h1 class="wp-heading-inline">User Points</h1>
      <a href="<?php echo admin_url( 'admin.php?page=points_activity_add' ); ?>" class="page-title-action">Add/Reduce</a>
      <hr class="wp-header-end">
      <ul class="subsubsub">
        <li class="all"><a class="current" href="<?php echo admin_url( 'admin.php?page=user_points' ); ?>">All<span class="count">(<?php echo $all; ?>)</span></a></li>
      </ul>
      <form id="points-activity-filter" method="get">
        <?php
        $this->user_points_obj->prepare_items();
        $this->user_points_obj->display();
        ?>
      </form>
    </div>
  <?php
  }
  public static function get_instance() {
    if ( ! isset( self::$instance ) ) {
      self::$instance = new self();
    }
    return self::$instance;
  }
}
ashuwp_user_points_admin::get_instance();

四、实际应用

在遇到某个操作比如：充值成功、购买成功、发表评论，执行ashuwp_add_points_activity函数即可。

范例一：充值成功增加积分。

//准备参数
$user_id = 1; //用户id
$points = 10; //积分数
$desc = '充值:'.$points;
$args = array(
'user_id' => $user_id,
'action' => 'add', //增加
'points' => $points,
'description' => $desc,
);
$chognzhi = ashuwp_add_points_activity($args);

五、结语

本教程的思路、代码仅供参考，代码为阿树从实际项目中剥离而来，在代码处理过程中，不敢保证不出错，特别是如果遇到有两个连续的empty请自行删除一个。