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php实战第八天

Jun 13, 2016 am 10:57 AM
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今天是学习做后台页面布局,用得是bootcss。那么效果展示一下。

 

 

 

 


布局的代码


[html]   
 

 
   
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瀑布流留言板管理系统

 
     
 
   
 
 
   
 
       
 
     
 
       
 
     
 
   
 
 
 
 
 
 
   
 
   
   
 
 




 
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瀑布流留言板管理系统


     

   

   


     

     


       

     

   

 


 

 
 

 

 


从中学到javascript函数

str.substr(0,20)意思是从0个字符开始取20个字符

Math.random()取随机数

switch语句

 

 

这后台是ajax的噢。写了好久的分页呢。好吧,直接上代码。

[javascript]  // JavaScript Document  
$('body').off('.data-api'); 
 
$(document).ready(function(e) { 
 
    $("#menu a").click(function() { 
 
        switch ($(this).text()) { 
            case '所有留言': 
                admin_content(1); 
                break; 
 
            case '基本设置': 
                $("#main #mainData").load('admin_config.html?r='+Math.random()); 
                break; 
 
            default: 
                break; 
        } 
 
 
 
    }); 
 
    $("#start").click(); 
}); 
 
 
/**
*留言管理
*/ 
function admin_content(page) { 
    $.ajax({ 
        url: 'http://localhost/l/admin.php?m=admin&a=content&page=' + page + '&rand=' + Math.random(), 
        type: 'get', 
        dataType: 'json', 
        data: {}, 
        complete: function(xhr, textStatus) { 
            //called when complete  
        }, 
        success: function(json, textStatus, xhr) { 
            if (json['state'] == 'ok') { 
                var page_start = json['start'];//分页开始  
                var page_end = json['end'];//分页结束  
                var page_page = json['page'];//分页当前页面  
                var data = json['data'];//分页数据  
/**
* 生成 表格内容
*/ 
                var table_html = '

'; 
                for (i = 0; i                     var trClass = (i % 2 == 0) ? 'class="info"' : ''; 
 
                    var tr_html = ''; 
                    table_html = table_html + tr_html; 
                } 
                table_html = table_html + '
操作 用户名 留言内容 发表时间
删除 ' + data[i].userName + '
' + data[i].content + '
' + getLocalTime(data[i].time) + '
'; 
 
/**
*生成分页
*/ 
                var page_html = '
'; 
 
 
                var mainData = $("#main #mainData"); 
                mainData.html(table_html); 
                mainData.append(page_html); 
 
                admin_content_page(page_page,page_end); //挂接分页点击事件  
            } 
 
 
 
            //alert(json.data);  
        }, 
        error: function(xhr, textStatus, errorThrown) { 
            //called when there is an error  
        } 
    }); 

 
/**
* 挂机分页事件
* 参数 page_page 当前分页
* 参数 page_end  分页数量
*/ 
function admin_content_page(page_page,page_end) { 
    $("#mainPage a").click(function() { 
        var charStr = $(this).text(); 
        var num = charStr; 
        if (charStr == "»") { 
            num = parseInt(page_page) + 1; 
            if (page_end                 return; 
            } 
 
        } else if (charStr == "«") { 
            num = parseInt(page_page) - 1; 
            if (num                 return; 
            } 
        } 
 
        admin_content(num); 
 
    }); 

 
function admin_content_del (id) { 
    alert(id); 

 
function getLocalTime(nS) { 
    return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' '); 

// JavaScript Document
$('body').off('.data-api');

$(document).ready(function(e) {

 $("#menu a").click(function() {

  switch ($(this).text()) {
   case '所有留言':
    admin_content(1);
    break;

   case '基本设置':
    $("#main #mainData").load('admin_config.html?r='+Math.random());
    break;

   default:
    break;
  }

 

 });

 $("#start").click();
});


/**
*留言管理
*/
function admin_content(page) {
 $.ajax({
  url: 'http://localhost/l/admin.php?m=admin&a=content&page=' + page + '&rand=' + Math.random(),
  type: 'get',
  dataType: 'json',
  data: {},
  complete: function(xhr, textStatus) {
   //called when complete
  },
  success: function(json, textStatus, xhr) {
   if (json['state'] == 'ok') {
    var page_start = json['start'];//分页开始
    var page_end = json['end'];//分页结束
    var page_page = json['page'];//分页当前页面
    var data = json['data'];//分页数据
/**
* 生成 表格内容
*/
    var table_html = '

';
    for (i = 0; i      var trClass = (i % 2 == 0) ? 'class="info"' : '';

     var tr_html = '

';
     table_html = table_html + tr_html;
    }
    table_html = table_html + '
操作 用户名 留言内容 发表时间
删除 ' + data[i].userName + '
' + data[i].content + '
' + getLocalTime(data[i].time) + '
';

/**
*生成分页
*/
    var page_html = '

';


    var mainData = $("#main #mainData");
    mainData.html(table_html);
    mainData.append(page_html);

    admin_content_page(page_page,page_end); //挂接分页点击事件
   }

 

   //alert(json.data);
  },
  error: function(xhr, textStatus, errorThrown) {
   //called when there is an error
  }
 });
}

/**
* 挂机分页事件
* 参数 page_page 当前分页
* 参数 page_end  分页数量
*/
function admin_content_page(page_page,page_end) {
 $("#mainPage a").click(function() {
  var charStr = $(this).text();
  var num = charStr;
  if (charStr == "»") {
   num = parseInt(page_page) + 1;
   if (page_end     return;
   }

  } else if (charStr == "«") {
   num = parseInt(page_page) - 1;
   if (num     return;
   }
  }

  admin_content(num);

 });
}

function admin_content_del (id) {
 alert(id);
}

function getLocalTime(nS) {
 return new Date(parseInt(nS) * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
}这是分页请求的服务端代码


[php]  public function content() 

    //引入分页类  
    include "page.class.php"; 
        //得到data表的数据数量  
    $rows = $this->db->count('select * from data'); 
    //创建分页对象  
    $page = new Page($rows, 5, ""); 
    $list=$this->db 
           ->order('id DESC') 
           ->table('data') 
           ->limit($page->getLimit()) 
           ->select(); 
    /*
    echo "

";<br>
    var_dump($list);<br>
    echo "
Copy after login
";
    */ 
    $json['state']='ok'; 
    $json['start']=$page->getStart(); 
    $json['end']=$page->getEnd(); 
    $json['page']=$page->getPage(); 
    $json['data']=$list; 
    echo json_encode($json); 
    //exit();  

  public function content()
  {
   //引入分页类
   include "page.class.php";
    //得到data表的数据数量
   $rows = $this->db->count('select * from data');
   //创建分页对象
   $page = new Page($rows, 5, "");
   $list=$this->db
       ->order('id DESC')
       ->table('data')
        ->limit($page->getLimit())
        ->select();
   /*
   echo "

";<br>
   var_dump($list);<br>
   echo "
Copy after login
";
   */
   $json['state']='ok';
   $json['start']=$page->getStart();
   $json['end']=$page->getEnd();
   $json['page']=$page->getPage();
   $json['data']=$list;
   echo json_encode($json);
   //exit();
  }
做这分页的时候由于是ajax,html代码生成都在客户端。经过我观察这分页类存在问题。实际上许多代码都没必要存在。有时间我去把他干掉。

附上代码 page.class.php

 

 

[php]      /**
        file: page.class.php 
        完美分页类 Page 
        @微凉 QQ496928838
    */ 
    class Page { 
        private $total;                         //数据表中总记录数  
        private $listRows;                      //每页显示行数  
        private $limit;                         //SQL语句使用limit从句,限制获取记录个数  
        private $uri;                           //自动获取url的请求地址  
        private $pageNum;                       //总页数  
        private $page;                          //当前页     
        private $config = array( 
                            'head' => "条记录",  
                            'prev' => "上一页",  
                            'next' => "下一页",  
                            'first'=> "首页",  
                            'last' => "末页" 
                        );                      //在分页信息中显示内容,可以自己通过set()方法设置  
        private $listNum = 10;                  //默认分页列表显示的个数  
 
        /**
            构造方法,可以设置分页类的属性
            @param  int $total      计算分页的总记录数
            @param  int $listRows   可选的,设置每页需要显示的记录数,默认为25条
            @param  mixed   $query  可选的,为向目标页面传递参数,可以是数组,也可以是查询字符串格式
            @param  bool    $ord    可选的,默认值为true, 页面从第一页开始显示,false则为最后一页
         */ 
        public function __construct($total, $listRows=25, $query="", $ord=true){ 
            $this->total = $total; 
            $this->listRows = $listRows; 
            $this->uri = $this->getUri($query); 
            $this->pageNum = ceil($this->total / $this->listRows); 
            /*以下判断用来设置当前面*/ 
            if(!empty($_GET["page"])) { 
                $page = $_GET["page"]; 
            }else{ 
                if($ord) 
                    $page = 1; 
                else 
                    $page = $this->pageNum; 
            } 
 
            if($total > 0) { 
                if(preg_match('/\D/', $page) ){ 
                    $this->page = 1; 
                }else{ 
                    $this->page = $page; 
                } 
            }else{ 
                $this->page = 0; 
            } 
             
            $this->limit = "LIMIT ".$this->getLimit(); 
        } 
 
        /**
            用于设置显示分页的信息,可以进行连贯操作
            @param  string  $param  是成员属性数组config的下标
            @param  string  $value  用于设置config下标对应的元素值
            @return object          返回本对象自己$this, 用于连惯操作
         */ 
        function set($param, $value){ 
            if(array_key_exists($param, $this->config)){ 
                $this->config[$param] = $value; 
            } 
            return $this; 
        } 
         
        /* 不是直接去调用,通过该方法,可以使用在对象外部直接获取私有成员属性limit和page的值 */ 
        function __get($args){ 
            if($args == "limit" || $args == "page") 
                return $this->$args; 
            else 
                return null; 
        } 
         
        /**
            按指定的格式输出分页
            @param  int 0-7的数字分别作为参数,用于自定义输出分页结构和调整结构的顺序,默认输出全部结构
            @return string  分页信息内容
         */ 
        function fpage(){ 
            $arr = func_get_args(); 
 
            $html[0] = " 共 {$this->total} {$this->config["head"]} "; 
            $html[1] = " 本页 ".$this->disnum()." 条 "; 
            $html[2] = " 本页从 {$this->start()}-{$this->end()} 条 "; 
            $html[3] = " {$this->page}/{$this->pageNum}页 "; 
            $html[4] = $this->firstprev(); 
            $html[5] = $this->pageList(); 
            $html[6] = $this->nextlast(); 
            $html[7] = $this->goPage(); 
 
            $fpage = '

'; 
            if(count($arr)                 $arr = array(0, 1,2,3,4,5,6,7); 
                 
            for($i = 0; $i                 $fpage .= $html[$arr[$i]]; 
         
            $fpage .= '
'; 
            return $fpage; 
        } 
         
        /* 格式为 1,5,*/ 
        function getLimit(){ 
            if($this->page > 0) 
                return ($this->page-1)*$this->listRows.",{$this->listRows}"; 
            else 
                return 0; 
        } 
 
        //当前的页面  
        function getPage(){ 
            return $this->page; 
        } 
        //分页的开始  
        function getStart(){ 
            $num1=$this->page-4; 
 
            return $num1>0?$num1:1; 
 
        } 
        //分页的结束  
        function getEnd(){ 
            $num1=$this->pageNum; 
            $num2=$this->page+5; 
 
            return $num1         } 
 
        /* 在对象内部使用的私有方法,用于自动获取访问的当前URL */ 
        private function getUri($query){     
            $request_uri = $_SERVER["REQUEST_URI"];  
            $url = strstr($request_uri,'?') ? $request_uri :  $request_uri.'?'; 
             
            if(is_array($query)) 
                $url .= http_build_query($query); 
            else if($query != "") 
                $url .= "&".trim($query, "?&"); 
         
            $arr = parse_url($url); 
 
            if(isset($arr["query"])){ 
                parse_str($arr["query"], $arrs); 
                unset($arrs["page"]); 
                $url = $arr["path"].'?'.http_build_query($arrs); 
            } 
             
            if(strstr($url, '?')) { 
                if(substr($url, -1)!='?') 
                    $url = $url.'&'; 
            }else{ 
                $url = $url.'?'; 
            } 
             
            return $url; 
        } 
 
        /* 在对象内部使用的私有方法,用于获取当前页开始的记录数 */ 
        private function start(){ 
            if($this->total == 0) 
                return 0; 
            else 
                return ($this->page-1) * $this->listRows+1; 
        } 
 
        /* 在对象内部使用的私有方法,用于获取当前页结束的记录数 */ 
        private function end(){ 
            return min($this->page * $this->listRows, $this->total); 
        } 
 
        /* 在对象内部使用的私有方法,用于获取上一页和首页的操作信息 */ 
        private function firstprev(){ 
            if($this->page > 1) { 
                $str = " uri}page=1'>{$this->config["first"]} "; 
                $str .= "uri}page=".($this->page-1)."'>{$this->config["prev"]} ";         
                return $str; 
            } 
 
        } 
     
        /* 在对象内部使用的私有方法,用于获取页数列表信息 */ 
        private function pageList(){ 
            $linkPage = " "; 
             
            $inum = floor($this->listNum/2); 
            /*当前页前面的列表 */ 
            for($i = $inum; $i >= 1; $i--){ 
                $page = $this->page-$i; 
 
                if($page >= 1) 
                    $linkPage .= "uri}page={$page}'>{$page} "; 
            } 
            /*当前页的信息 */ 
            if($this->pageNum > 1) 
                $linkPage .= "{$this->page} "; 
             
            /*当前页后面的列表 */ 
            for($i=1; $i                 $page = $this->page+$i; 
                if($page pageNum) 
                    $linkPage .= "uri}page={$page}'>{$page} "; 
                else 
                    break; 
            } 
            $linkPage .= '
'; 
            return $linkPage; 
        } 
 
        /* 在对象内部使用的私有方法,获取下一页和尾页的操作信息 */ 
        private function nextlast(){ 
            if($this->page != $this->pageNum) { 
                $str = " uri}page=".($this->page+1)."'>{$this->config["next"]} "; 
                $str .= " uri}page=".($this->pageNum)."'>{$this->config["last"]} "; 
                return $str; 
            } 
        } 
 
        /* 在对象内部使用的私有方法,用于显示和处理表单跳转页面 */ 
        private function goPage(){ 
                if($this->pageNum > 1) { 
                return ' '; 
            } 
        } 
 
        /* 在对象内部使用的私有方法,用于获取本页显示的记录条数 */ 
        private function disnum(){ 
            if($this->total > 0){ 
                return $this->end()-$this->start()+1; 
            }else{ 
                return 0; 
            } 
        } 
    } 
 
     
     
     

 /**
  file: page.class.php
  完美分页类 Page
  @微凉 QQ496928838
 */
 class Page {
  private $total;          //数据表中总记录数
  private $listRows;       //每页显示行数
  private $limit;          //SQL语句使用limit从句,限制获取记录个数
  private $uri;            //自动获取url的请求地址
  private $pageNum;        //总页数
  private $page;       //当前页 
  private $config = array(
       'head' => "条记录",
       'prev' => "上一页",
       'next' => "下一页",
       'first'=> "首页",
       'last' => "末页"
      );       //在分页信息中显示内容,可以自己通过set()方法设置
  private $listNum = 10;      //默认分页列表显示的个数

  /**
   构造方法,可以设置分页类的属性
   @param int $total  计算分页的总记录数
   @param int $listRows 可选的,设置每页需要显示的记录数,默认为25条
   @param mixed $query 可选的,为向目标页面传递参数,可以是数组,也可以是查询字符串格式
   @param  bool $ord 可选的,默认值为true, 页面从第一页开始显示,false则为最后一页
   */
  public function __construct($total, $listRows=25, $query="", $ord=true){
   $this->total = $total;
   $this->listRows = $listRows;
   $this->uri = $this->getUri($query);
   $this->pageNum = ceil($this->total / $this->listRows);
   /*以下判断用来设置当前面*/
   if(!empty($_GET["page"])) {
    $page = $_GET["page"];
   }else{
    if($ord)
     $page = 1;
    else
     $page = $this->pageNum;
   }

   if($total > 0) {
    if(preg_match('/\D/', $page) ){
     $this->page = 1;
    }else{
     $this->page = $page;
    }
   }else{
    $this->page = 0;
   }
   
   $this->limit = "LIMIT ".$this->getLimit();
  }

  /**
   用于设置显示分页的信息,可以进行连贯操作
   @param string $param 是成员属性数组config的下标
   @param string $value 用于设置config下标对应的元素值
   @return object   返回本对象自己$this, 用于连惯操作
   */
  function set($param, $value){
   if(array_key_exists($param, $this->config)){
    $this->config[$param] = $value;
   }
   return $this;
  }
  
  /* 不是直接去调用,通过该方法,可以使用在对象外部直接获取私有成员属性limit和page的值 */
  function __get($args){
   if($args == "limit" || $args == "page")
    return $this->$args;
   else
    return null;
  }
  
  /**
   按指定的格式输出分页
   @param int 0-7的数字分别作为参数,用于自定义输出分页结构和调整结构的顺序,默认输出全部结构
   @return string 分页信息内容
   */
  function fpage(){
   $arr = func_get_args();

   $html[0] = " 共 {$this->total} {$this->config["head"]} ";
   $html[1] = " 本页 ".$this->disnum()." 条 ";
   $html[2] = " 本页从 {$this->start()}-{$this->end()} 条 ";
   $html[3] = " {$this->page}/{$this->pageNum}页 ";
   $html[4] = $this->firstprev();
   $html[5] = $this->pageList();
   $html[6] = $this->nextlast();
   $html[7] = $this->goPage();

   $fpage = '

';
   if(count($arr)     $arr = array(0, 1,2,3,4,5,6,7);
    
   for($i = 0; $i     $fpage .= $html[$arr[$i]];
  
   $fpage .= '
';
   return $fpage;
  }
  
  /* 格式为 1,5,*/
  function getLimit(){
   if($this->page > 0)
    return ($this->page-1)*$this->listRows.",{$this->listRows}";
   else
    return 0;
  }

  //当前的页面
  function getPage(){
   return $this->page;
  }
  //分页的开始
  function getStart(){
   $num1=$this->page-4;

   return $num1>0?$num1:1;

  }
  //分页的结束
  function getEnd(){
   $num1=$this->pageNum;
   $num2=$this->page+5;

   return $num1   }

  /* 在对象内部使用的私有方法,用于自动获取访问的当前URL */
  private function getUri($query){ 
   $request_uri = $_SERVER["REQUEST_URI"]; 
   $url = strstr($request_uri,'?') ? $request_uri :  $request_uri.'?';
   
   if(is_array($query))
    $url .= http_build_query($query);
   else if($query != "")
    $url .= "&".trim($query, "?&");
  
   $arr = parse_url($url);

   if(isset($arr["query"])){
    parse_str($arr["query"], $arrs);
    unset($arrs["page"]);
    $url = $arr["path"].'?'.http_build_query($arrs);
   }
   
   if(strstr($url, '?')) {
    if(substr($url, -1)!='?')
     $url = $url.'&';
   }else{
    $url = $url.'?';
   }
   
   return $url;
  }

  /* 在对象内部使用的私有方法,用于获取当前页开始的记录数 */
  private function start(){
   if($this->total == 0)
    return 0;
   else
    return ($this->page-1) * $this->listRows+1;
  }

  /* 在对象内部使用的私有方法,用于获取当前页结束的记录数 */
  private function end(){
   return min($this->page * $this->listRows, $this->total);
  }

  /* 在对象内部使用的私有方法,用于获取上一页和首页的操作信息 */
  private function firstprev(){
   if($this->page > 1) {
    $str = " uri}page=1'>{$this->config["first"]} ";
    $str .= "uri}page=".($this->page-1)."'>{$this->config["prev"]} ";  
    return $str;
   }

  }
 
  /* 在对象内部使用的私有方法,用于获取页数列表信息 */
  private function pageList(){
   $linkPage = " ";
  

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