Detaillierte grafische Erklärung der Paging-Funktion von thinkPHP

In diesem Artikel wird hauptsächlich die Paging-Funktion von thinkPHP vorgestellt und die relevanten Betriebstechniken von thinkPHP zur Implementierung der Paging-Funktion anhand des Produktmodells in Form eines vollständigen Beispiels analysiert

Das Beispiel dieses Artikels beschreibt die Paging-Funktion von thinkPHP. Teilen Sie es wie folgt als Referenz mit allen:

Schnittstelle ServiceInterFace:

<?php
/**
 * InterFaceService
 * @author yhd
 */
namespace Red;
interface ServiceInterFace {
  /**
   * 实例化当前类
   */
  public static function getInstance();
}

Statische Serviceklasse StaticService:

<?php
/**
 * 静态服务类
 * StaticService
 * @author yhd
 */
namespace Red;
class StaticService{
  protected static $data;
  /**
   * 设置静态数据
   * @param string $key key
   * @param mixed $data data
   * @return mixed
   */
  public static function setData($key,$data){
    self::$data[$key] = $data;
    return self::$data[$key];
  }
  /**
   * 通过引用使用静态数据
   * @param string $key key
   * @return mixed
   */
  public static function & getData($key){
    if(!isset(self::$data[$key])){
      self::$data[$key] = null;
    }
    return self::$data[$key];
  }
  /**
   * 缓存实例化过的对象
   * @param string $name 类名
   * @return 对象
   */
  public static function getInstance($name){
    $key = &#39;service_@_&#39;.$name;
    $model = &self::getData($key);
    if($model === null){
      $model = new $name();
    }
    return $model;
  }
  /**
   * html转义过滤
   * @param mixed $input 输入
   * @return mixed
   */
  public static function htmlFilter($input){
    if(is_array($input)) {
      foreach($input as & $row) {
        $row = self::htmlFilter($row);
      }
    } else {
      if(!get_magic_quotes_gpc()) {
        $input = addslashes($input);
      }
      $input = htmlspecialchars($input);
    }
    return $input;
  }
}

abstract AbProduct Abstrakte Produktmanagementklasse:

<?php
/**
* 抽象商品管理类
* AbProduct.class.php
* @lastmodify 2015-8-17
* @author yhd
*/
namespace Red\Product;
abstract class AbProduct{
  public $errorNum;
  /*
  *返回错误信息
  *@param $errorNum 错误代码
  */
  public function GetStatus(){
    $errorNum = $this->errorNum;
    switch($errorNum){
        case 0:
            $data[&#39;status&#39;] = 0;
            $data[&#39;message&#39;] = &#39;收藏成功&#39;;
            break;
        case 1:
            $data[&#39;status&#39;] = 1;
            $data[&#39;message&#39;] = &#39;收藏失败&#39;;
            break;
        case 2:
            $data[&#39;status&#39;] = 2;
            $data[&#39;message&#39;] = &#39;已收藏&#39;;
            break;
        case 3:
            $data[&#39;status&#39;] = 3;
            $data[&#39;message&#39;] = &#39;未登陆&#39;;
            break;
        case 4:
            $data[&#39;status&#39;] = 4;
            $data[&#39;message&#39;] = &#39;缺少参数&#39;;
            break;
        default:
            $data[&#39;status&#39;] = 200;
            $data[&#39;message&#39;] = &#39;未知错误&#39;;
    }
    return $data;
  }

MemberModel Member Model:

<?php
/**
* 会员模型
* MemberModel.class.php
* @copyright (C) 2014-2015 red
* @license http://www.red.com/
* @lastmodify 2015-8-17
* @author yhd
*/
namespace Red\Passport\Models;
use Think\Model;
use Red\ServiceInterFace;
use Red\StaticService;
class MemberModel extends Model implements ServiceInterFace{
  protected $userId;
  protected $error;
  protected function _initialize(){
    $this->userId = getUserInfo(0);
  }
   /**
   * 实例化本类
   * @return MemberModel
   */
  public static function getInstance() {
    return StaticService::getInstance(__CLASS__);
  }
   /**
   *  获取登录用户信息
   * @param string  $data 查询条件
   * @return array
   */
  public function getUser($data = &#39;&#39;) {
    if(empty($data)){
      return $this->where("id=".$this->userId)->find();
    }else{
      return $this->field($data)->where("id=".$this->userId)->find();
    }
  }
  /**
   * 修改用户信息
   * @param array $data
   * @param array $where 查询条件
   */
  public function editUserInfo($data, $where = &#39;&#39;) {
    if( $this->_before_check($data) === false ){
      return $this->error[&#39;msg&#39;];
    }
    if(!empty($where) && is_array($where)){
      $condition[ $where[0] ] = array(&#39;eq&#39;, $where[1]);
      return $this->where($condition)->save($data);
    }
    return $this->where("id=".$this->userId)->save($data);
  }
  /**
   * 获取用户信息
   * @param string $data 用户名
   * return array()
   */
  public function checkUserInfo($str, $field = &#39;&#39;){
    //注册类型
    $info = CheckType($str);
    $condition[$info] = array(&#39;eq&#39;,$str);
    if(!empty($field)){
      return $this->field($field)->where($condition)->find();
    }
    return $this->where($condition)->find();
  }
  /**
   * 获取用户信息
   * @param array $data 用户名
   * return array()
   */
  public function getAccount($data){
    //注册类型
    $info = CheckType($data);
    $condition[&#39;id&#39;] = array(&#39;eq&#39;,$this->userId);
    $condition[$info] = array(&#39;eq&#39;,$data);
    return $this->where($condition)->find();
  }
  /**
   * 修改用户密码
   * @param array $data[&#39;id&#39;]用户ID
   * @param $data[&#39;passWord&#39;]用户密码
   * return true or false
   */
  public function upUserPassById($data){
    $condition[&#39;id&#39;] = array(&#39;eq&#39;,$data[&#39;id&#39;]);
    $status = $this->where($condition)->save(array("password"=>md5($data[&#39;password&#39;])));
    if($status){
        return TRUE;
    }else {
        return FALSE;
    }
  }
  /**
   * 校验用户的账号或者密码是否正确
   * @param $data[&#39;username&#39;] 用户名
   * @param $data[&#39;password&#39;] 密码
   * return true or false
   */
  public function checkUserPasswd($data= array()){
      $type = CheckType($data[&#39;username&#39;]);
      $condition[$type] = array(&#39;eq&#39;,$data[&#39;username&#39;]);
      $condition[&#39;password&#39;] = array(&#39;eq&#39;,md5($data[&#39;password&#39;]));
       return $this->where($condition)->find();
  }
  /**
   * 网页登录校验token
   * @param token string
   * return bool
   */
  public function checkToken($token){
      return $this->autoCheckToken($token);
  }
  /**
   * 后台封号/解封
   * param int $user_id
   */
  public function changeStatus($data){
    if($this->save($data)){
      return true;
    }else{
      return false;
    }
  }
  protected function _before_check(&$data){
    if(isset($data[&#39;username&#39;]) && empty($data[&#39;username&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入用户名&#39;;
      return false;
    }
    if(isset($data[&#39;nickname&#39;]) && empty($data[&#39;nickname&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入昵称&#39;;
      return false;
    }
    if(isset($data[&#39;realname&#39;]) && empty($data[&#39;realname&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入真名&#39;;
      return false;
    }
    if(isset($data[&#39;email&#39;]) && empty($data[&#39;email&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入邮箱&#39;;
      return false;
    }
    if(isset($data[&#39;mobile&#39;]) && empty($data[&#39;mobile&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入手机号码&#39;;
      return false;
    }
    if(isset($data[&#39;password&#39;]) && empty($data[&#39;password&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请输入密码&#39;;
      return false;
    }
    if(isset($data[&#39;headimg&#39;]) && empty($data[&#39;headimg&#39;])){
      $this->error[&#39;msg&#39;] = &#39;请上传头像&#39;;
      return false;
    }
    return true;
  }
}

ProductModel Produktmodell:

<?php
/**
* 商品模型
* ProductModel.class.php
* @lastmodify 2015-8-17
* @author yhd
*/
namespace Red\Product\Models;
use Think\Model;
use Red\ServiceInterFace;
use Red\StaticService;
class ProductModel extends Model implements ServiceInterFace{
  /**
   * 实例化本类
   * @return ProductModel
   */
  public static function getInstance() {
    return StaticService::getInstance(__CLASS__);
  }
  /**
   * 单个商品
   * @param string $id
   * @param integer $status 状态 1:有效 2:无效
   * @param integer $onsale 是否上架 1:是 2:否
   * @return array 一维数组
   */
  public function getProOne($id, $status = 1 , $onsale = 1){
    $condition[&#39;onsale&#39;] = array(&#39;eq&#39;, $onsale); //是否上架
    $condition[&#39;status&#39;] = array(&#39;eq&#39;, $status); //状态
    $condition[&#39;id&#39;] = array(&#39;eq&#39;,$id);
    return $this->where($condition)->find();
  }
  /**
   * 商品列表
   * @param string $limit 查询条数
   * @param array $data 查询条件
   * @return array 二维数组
   */
  public function getProList($data = &#39;&#39;){
    $condition[&#39;onsale&#39;] = array(&#39;eq&#39;, $data[&#39;onsale&#39;]); //是否上架
    $condition[&#39;status&#39;] = array(&#39;eq&#39;, $data[&#39;status&#39;]); //状态
    $condition[&#39;type&#39;] = array(&#39;eq&#39;, $data[&#39;type&#39;]);  //分类
    if(isset($data[&#39;limit&#39;]) && isset($data[&#39;order&#39;]) ){
      $return =$this->where($condition)->limit($data[&#39;limit&#39;])->order($data[&#39;order&#39;])->select();
    }else{
      $return =$this->where($condition)->select();
    }
    return $return;
  }
  /**
   * 添加商品
   * @param array $data
   * @return int
   */
  public function addProduct($data){
    return $this->add($data);
  }
  /**
   * 删除商品
   *
   */
  public function delProduct($id){
    $condition[&#39;id&#39;] = array(&#39;eq&#39;, $id);
    return $this->where($condition)->delete();
  }
  /**
   * 修改商品
   * @param string|int $id
   * @param array $data
   * @return
   */
  public function editProdcut($id, $data){
    $condition[&#39;id&#39;] = array(&#39;eq&#39;, $id);
    return $this->where($condition)->save($data);
  }
  public function getProductInfo($product){
    if(empty($product) || !isset($product[&#39;product_id&#39;])){
      return array();
    }
    $info = $this->getProOne($product[&#39;product_id&#39;]);
    $product[&#39;name&#39;] = $info[&#39;name&#39;];
    $product[&#39;store_id&#39;] = $info[&#39;store_id&#39;];
    $product[&#39;price&#39;] = $info[&#39;price&#39;];
    $product[&#39;m_price&#39;] = $info[&#39;m_price&#39;];
    return $product;
  }
}

ProductManage Produktmanagementklasse:

<?php
　　namespace User\Controller;
　　use Red\Product\ProductManage;
　　class FavoriteController extends AuthController {
　　public function index($page=1){
　　　　$limit=1;
　　　　$list = ProductManage::getInstance()->getCollectList($page,$limit);
　　　　$showpage = create_pager_html($list[&#39;total&#39;],$page,$limit);
　　　　$this->assign(get_defined_vars());
　　　　$this->display();
　　}
　　public function cancelCollect(){
　　　　$ids = field(&#39;ids&#39;);
　　　　$return = ProductManage::getInstance()->cancelProductCollect($ids);
　　　　exit(json_encode($return));
　　}
}

functions.php Paging-Funktion:

<?php
/**
 * 分页
 * @param $total 总条数
 * @param $page 第几页
 * @param $perpage 每页条数
 * @param $url 链接地址
 * @param $maxpage 最大页码
 * @return string 最多页数
*/
function create_pager_html($total, $page = 1, $perpage = 20, $url = &#39;&#39;, $maxpage = null) {
  $totalcount = $total;
  if (empty($url) || !is_string($url)) {
    $url = array();
    foreach ($_GET as $k => $v) {
      if ($k != &#39;page&#39;) {
        $url[] = urlencode($k) . &#39;=&#39; . urlencode($v);
      }
    }
    $url[] = &#39;page={page}&#39;;
    $url = &#39;?&#39; . implode(&#39;&&#39;, $url);
  }
  if ($total <= $perpage)
    return &#39;&#39;;
  $total = ceil($total / $perpage);
  $pagecount = $total;
  $total = ($maxpage && $total > $maxpage) ? $maxpage : $total;
  $page = intval($page);
  if ($page < 1 || $page > $total)
    $page = 1;
    $pages = &#39;<p class="pages"><a href="&#39; . str_replace(&#39;{page}&#39;, $page - 1 <= 0 ? 1 : $page - 1, $url) . &#39;" rel="external nofollow" title="上一页" class="page_start">上一页</a>&#39;;
  if ($page > 4 && $page <= $total - 4) {
    $mini = $page - 3;
    $maxi = $page + 2;
  } elseif ($page <= 4) {
    $mini = 2;
    $maxi = $total - 2 < 7 ? $total - 2 : 7;
  } elseif ($page > $total - 4) {
    $mini = $total - 7 < 3 ? 2 : $total - 7;
    $maxi = $total - 2;
  }
  for ($i = 1; $i <= $total; $i++) {
    if ($i != $page) {
      $pages .= &#39;<a class="page-num" href="&#39; . str_replace(&#39;{page}&#39;, $i, $url) . &#39;" rel="external nofollow" >&#39; . $i . &#39;</a>&#39;;
    } else {
      $pages .= &#39;<span class="page_cur">&#39; . $i . &#39;</span>&#39;;
    }
    if ($maxi && $i >= $maxi) {
      $i = $total - 2;
      $maxi = 0;
    }
    if (($i == 2 or $total - 2 == $i) && $total > 10) {
      $pages .= &#39;&#39;;
    }
    if ($mini && $i >= 2) {
      $i = $mini;
      $mini = 0;
    }
  }
  $pages .= &#39;<a href="&#39; . str_replace(&#39;{page}&#39;, $page + 1 >= $total ? $total : $page + 1, $url) . &#39;" rel="external nofollow" title="下一页" class="page_next">下一页</a><span class="pageOp"><span class="sum">共&#39; . $totalcount .
      &#39;条 </span><input type="text" class="pages_inp" id="pageno" value="&#39; . $page . &#39;" onkeydown="if(event.keyCode==13 && this.value) {window.location.href=\&#39;&#39; . $url . &#39;\&#39;.replace(/\{page\}/, this.value);return false;}"><span class="page-sum">/ &#39; .
      $total . &#39;页 </span><input type="button" class="pages_btn" value="GO" onclick="if(document.getElementById(\&#39;pageno\&#39;).value>0)window.location.href=\&#39;&#39; . $url . &#39;\&#39;.replace(/\{page\}/, document.getElementById(\&#39;pageno\&#39;).value);"></span></p>&#39;;
  return $pages;
}

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