php mysql分页实现代码

这算是一款比较完美的分页类了，支持表单输入跳转，也支持select跳转分页，同时还支持上10页，下10页偏移分页哦。

class wind_page 
{
    var $page;
      //现在所在页
    var $total;
      //记录总条数
    var $totalpage;
     //总页树
    var $pagesize;
      //每页显示条数
    var $offset;
      //偏移量
    var $result;
      //记录集合
    var $thispage;
      //记录总条数 //记录总条数 //记录总条数
    var $link;
      //连接（记录$_get变量）
    var $bar_mun;
      //bar显示的页数
    var $starttime;
      //开始时间
    var $bar_last;
      //导航条的持续页数
    var $bar_mid;
      //导航条中间页
    var $minpage;
      //导航条最小页
    var $maxpage;
      //导航条最大页
    var $key;
      //标识分页(一个页面多个分页时用与区分)
    var $style;
      //输出的风格
    var $pre_page_char;
      //上一页
    var $pre_page_image;
      //上一页图形
    var $pre_page_char_color;
      //上一页字体颜色
    var $next_page_char;
      //下一页
    var $next_page_image;
      //下一页图形
    var $next_page_char_color;
      //下一页字体颜色
    var $pre_groud_char;
      //上翻中间页数
    var $pre_groud_char_color;
      //上翻中间页数字体颜色
    var $next_groud_char;
      //下翻中间页数
    var $next_groud_char_color;
    //下翻中间页数字体颜色
    var $first_page_char;
    //首页
    var $first_page_char_color;
    //首页字体颜色
    var $last_page_char;
    //尾页
    var $last_page_char_color;
    //尾页字体颜色
    var $html_page_val;
    //html当前的页码值
    
    function wind_page($sql, $pagesize = 20, $bar_mun = 10, $style = 1,$this_page = 1,$html_page_val=1,$key = "") //构造函数（）
    {
        $this->starttime = microtime();
        $this->pagesize = $pagesize;
          //每页显示条数
        $this->key = trim($key);
        $this->bar_mun = $bar_mun;
        $this->style = $style;
        $this->html_page_val = $html_page_val;
        //html当前的页码值
        $this->bar_last = $bar_mun-1;
        $this->bar_mid = floor($bar_mun/2);
        $this->sql = $sql;
        $result = mysql教程_query($this->sql);
        $this->total = mysql_num_rows($result);
        //记录总条数
        $this->totalpage = ceil($this->total/$this->pagesize);
        //总页数
        //$this->page = ceil($_get[$this->key."page"]);
        $this->page = $this_page;
        //现在所在页
        if ($this->page == "" || $this->page < 1 || !is_numeric($this->page))$this->page = 1;
        $this->page = min($this->page, $this->totalpage);
        $this->thispage = $this->pagesize;
        if ($this->page * $this->pagesize > $this->total) {
            $this->thispage = $this->total-($this->page-1) * $this->pagesize;
        };
        $this->sql .= " limit ".($this->pagesize * ($this->page-1)).", ".$this->pagesize;
          //开始读取的条数
       //echo "<br>";
        $this->result = mysql_query($this->sql);
        $this->getvar();
       
        $this->pre_page_char = "上一页";
        $this->pre_page_image = "<img src="/images/b_s_prev.gif" border="0" />";
        $this->next_page_char = "下一页";
        $this->next_page_image = "<img src="/images/b_s_next.gif" border="0" />";
        $this->pre_groud_char = "上一组";
        $this->next_groud_char = "下一组";

    }
   
    function getvar() //取得除page外的其他get变量
    {
        $this->link = "";
        foreach($_get as $key => $vaule) {
            if (strtolower($key)  !== $this->key."page") $this->link  .= "&$key=$vaule";
        }
    }
    
    function pre_page($color="#909090",$sign=0) //上一页
    {
        if ($this->page > 1) { 
            return "<a href="index_".sprintf("%02d",$this->page-1).".html" class="ab"><font color="".$this->pre_page_char_color."">".$this->pre_page_char."</font></a>";
        } else
        {
           return "<font color="$color">".$this->pre_page_char."</font>";
        }
      
    }
    
    function next_page($color="#909090",$sign=0) //下一页
    {
        if ($this->page < $this->totalpage) {
          
              return "<a href="index_".sprintf("%02d",$this->page+1).".html" class="ab">".$this->next_page_char."</a>";
           
        } else {
          
             return "<font color="$color">".$this->next_page_char."</font>";
        }
    }
    
    function pre_groud($char = "<<", $color = "#909090") //上一组
    {
        if ($this->page <= ($this->bar_mid+1)) {
            return "<font color="".$color."">".$this->pre_groud_char."</font>";
            //return $this->pre_groud_char;
        } else {
            $pre_gpage = ($this->page-$this->bar_mid < 0)?1:
            $this->page-$this->bar_mid;
            return "<a href="index_".sprintf("%02d",$pre_gpage).".html" title="上一组">".$this->pre_groud_char."</a>";
        }
    }
    
    function next_groud($char = ">>", $color = "#909090") //下一组
    {
        if (($this->totalpage-$this->page) <= ($this->bar_mid-1)) {
            return "<font color="".$color."">".$this->next_groud_char."</font>";
        } else {
            $next_gpage = ($this->page+$this->bar_mid < $this->totalpage)?$this->page+$this->bar_mid:
            $this->totalpage;
            return "<a href="index_".sprintf("%02d",$next_gpage).".html"  title="下一组" >".$this->next_groud_char."</a>";
        }
    }
    
    function mun($lcolor = "#ff6633", $acolor = "#ff6633", $left = "&nbsp", $right = "&nbsp") //数字导航栏
    {
        $link = "";
        $this->minpage = ($this->page-$this->bar_mid < 1) ? 1:($this->page-$this->bar_mid);
        $this->maxpage = $this->minpage+$this->bar_last;
        if ($this->maxpage > $this->totalpage) {
            $this->maxpage = $this->totalpage;
            $this->minpage = ($this->maxpage-$this->bar_last < 1) ? 1: $this->maxpage-$this->bar_last;
        }
       for($i = $this->minpage; $i <= $this->maxpage; $i++)
        {
         /* 循环输出页码 */
            $i = sprintf("%02d",$i);
            //不足两位的前面补0
            $char = $left.$i.$right;
            //导航条左右两边加窄
            if ($i == $this->page)
            {
             /* 假如是当前页则不加链接 */
                $link.= "<font color="".$acolor."">".$char."</font>";
            }
            else
             {
                //$link  .= "<a href="".$_server['php教程_self']."?".$this->key."page=".$i.$this->link."" >".$char."</a>";
                $link.= "<a href="index_".$i.".html" >".$char."</a>";
                //关键把$link 加在新资料加入之后
            }
        }
        echo "<br>";
        return $link;
    }
    
    
    function jump_bar($class = "jump_bar") //下拉跳转
    {
        $link = "<select name="menu1" onchange="mm_jumpmenu('parent',this,0)" class="$class">";
        for($i = $this->minpage; $i <= $this->maxpage; $i++) {
            if ($i < 10)$i = "0".$i;
            //定义选择不超过10个
            if($this->page == $i)
            {
             /* 假如为当前页码，则选中 */
             $link  .= "<option value="index_".$i.".html" selected>第".$i."页</option>";
            }
            else
            {
              $link  .= "<option value="index_".$i.".html">第".$i."页</option>";
            }
        }
        $link  .= "</select>";
        return $link;
    }
    
    function mun_bar() //整条数字导航栏  [<<][<][01][02][03][04][05][06][07][08][09][10][>][>>]
    {
        //return $this->first_groud().$this->pre_groud().$this->pre_page().$this->mun().$this->next_page().$this->next_groud().$this->last_groud();
        return $this->pre_groud()."&nbsp;".$this->pre_page().$this->mun().$this->next_page()."&nbsp;".$this->next_groud();
    }
    function page_button()
    { //整条数字导航栏  [<][01][02][03][04][05][06][07][08][09][10][>]
        //return $this->first_groud().$this->pre_groud().$this->pre_page().$this->mun().$this->next_page().$this->next_groud().$this->last_groud();
        return $this->pre_page('#909090',1).$this->mun().$this->next_page('#909090',1);
    }
    
    function total_bar($coloro = "#000000", $colorn = "red") //统计数字  页次:1/4310 每页:20 共计:4310页 本页:20
    {
        return "<font color=$coloro>页次:<font color=$colorn>$this->page</font>/$this->totalpage 每页:<font color=$colorn>$this->pagesize</font> 共计:<font color=$colorn>$this->totalpage</font>页  本页:<font color=$colorn>$this->thispage</font></font>";
    }
    
    // 整条导航栏
    //页次:1/4310 每页:20 共计:4310页 本页:20 [<<][<][01][02][03][04][05][06][07][08][09][10][>][>>]
    function page_bar($coloro = "#000000", $colorn = "red") {
        return "<table width='100%'  border='0' cellspacing='0'>
            <tr>
            <td width='5%'></td>
            <td width='35%'>".$this->total_bar()."</td>
            <td width='40%'align='right'>".$this->mun_bar()."</td>
            <td width='10%'>".$this->jump_bar()."</td>
            <td width='5%'></td>
            </tr>
            </table>".$this->mm_jumpmenu();
    }
    
    function taketime($color = "#000000") //计算执行时间
    {
        return "<div align='center'><font color=$color>本页执行时间".abs((microtime()-$this->starttime) * 1000)."毫秒</font></div>";
    }
    
    function style() //输出分页的样式
    {
        $style_num = $this->style;
        
        if ($this->totalpage  != 0) //如果总页数=0 ,表示无分页
        {
            switch($style_num) {
                case 1:
                return $this->page_bar();
                //页次:1/4310 每页:20 共计:4310页 本页:20 [<<][<][01][02][03][04][05][06][07][08][09][10][>][>>]
                break;
                case 2:
                echo $this->mun_bar();
                //整条数字导航栏  [<<][<][01][02][03][04][05][06][07][08][09][10][>][>>]
                break;
                case 3:
                echo $this->page_button();
                //整条数字导航栏  [<][01][02][03][04][05][06][07][08][09][10][>]
                break;
            }
        }
    }
    
    function mm_jumpmenu() //网页特效的跳转
    {
        //window.open(selobj.options[selobj.selectedindex].value,targ);
        return "<script language="javascript">
            <!--
            function mm_jumpmenu(targ,selobj,restore){
            if (selobj.selectedindex==0) return;
            window.location.href=selobj.options[selobj.selectedindex].value,targ;
            if (restore) selobj.selectedindex=0;
            }
            //-->
            </script>";
    }
    
    function first_groud($char = "&nbsp;<<", $color = "#000000") {
        if ($this->page == 1) {
            return "<font color="".$color."">".$char."</font>";
        } else {
            //$pre_gpage=($this->page-$this->bar_mid<0)?1:$this->page-$this->bar_mid;
            $pre_gpage = 1;
            return "<a href="".$_server['php_self']."?".$this->key."page=".$pre_gpage.$this->link."" title="上一组"><font color="".$color."">".$char."</font></a>";
        }
    }
    
    function last_groud($char = "&nbsp;>>", $color = "#000000") {
        if ($this->page == $this->totalpage) {
            return "<font color="".$color."">".$char."</font>";
        } else {
            //$pre_gpage=($this->page-$this->bar_mid<0)?1:$this->page-$this->bar_mid;
            $pre_gpage = $this->totalpage;
            return "<a href="".$_server['php_self']."?".$this->key."page=".$pre_gpage.$this->link."" title="上一组"><font color="".$color."">".$char."</font></a>";
        }
    }
}

本款分页类支持显示为 11/20 页次 共400条记录 20条/页 上一页 11 12 13 14 1这种形式，如page标签，用来控制url页。比如说xxx.php?PB_page=2中的PB_page,同时支持上页下页尾页首页，同时可自动获取url参数分页。

 
*/
class minupage
{
/**
   * config ,public
   */
var $page_name="p";//page标签，用来控制url页。比如说xxx.php?pb_page=2中的pb_page
var $next_page='>';//下一页
var $pre_page='<';//上一页
var $first_page='first';//首页
var $last_page='last';//尾页
var $pre_bar='<<';//上一分页条
var $next_bar='>>';//下一分页条
var $format_left='';
var $format_right='';
var $is_ajax=false;//是否支持ajax分页模式

/**
   * private
   *
   */
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
var $ajax_action_name='';//ajax动作名
var $nowindex=1;//当前页
var $url="";//url地址头
var $offset=0;

/**
   * constructor构造函数
   *
   * @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
   */
function minupage($array)
{
   if(is_array($array)){
     if(!array_key_exists('total',$array))$this->error(__function__,'need a param of total');
     $total=intval($array['total']);
     $perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
     $nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
     $url=(array_key_exists('url',$array))?$array['url']:'';
   }else{
     $total=$array;
     $perpage=10;
     $nowindex='';
     $url='';
   }
   if((!is_int($total))||($total<0))$this->error(__function__,$total.' is not a positive integer!');
   if((!is_int($perpage))||($perpage<=0))$this->error(__function__,$perpage.' is not a positive integer!');
   if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename
   $this->_set_nowindex($nowindex);//设置当前页
   $this->_set_url($url);//设置链接地址
   $this->totalpage=ceil($total/$perpage);
   $this->offset=($this->nowindex-1)*$perpage;
   if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开ajax模式
}
/**
   * 设定类中指定变量名的值，如果改变量不属于这个类，将throw一个exception
   *
   * @param string $var
   * @param string $value
   */
function set($var,$value)
{
   if(in_array($var,get_object_vars($this)))
     $this->$var=$value;
   else {
   $this->error(__function__,$var." does not belong to pb_page!");
   }
 
}
/**
   * 打开倒ajax模式
   *
   * @param string $action 默认ajax触发的动作。
   */
function open_ajax($action)
{
   $this->is_ajax=true;
   $this->ajax_action_name=$action;
}
/**
   * 获取显示"下一页"的代码
   *
   * @param string $style
   * @return string
   */
function next_page($style='')
{
   if($this->nowindex<$this->totalpage){
   return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
   }
   return '<span class="'.$style.'">'.$this->next_page.'</span>';
}

/**
   * 获取显示"上一页"的代码
   *
   * @param string $style
   * @return string
   */
function pre_page($style='')
{
   if($this->nowindex>1){
   return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
   }
   return '<span class="'.$style.'">'.$this->pre_page.'</span>';
}

/**
   * 获取显示"首页"的代码
   *
   * @return string
   */
function first_page($style='')
{
   if($this->nowindex==1){
       return '<span class="'.$style.'">'.$this->first_page.'</span>';
   }
   return $this->_get_link($this->_get_url(1),$this->first_page,$style);
}

/**
   * 获取显示"尾页"的代码
   *
   * @return string
   */
function last_page($style='')
{
   if($this->nowindex==$this->totalpage){
       return '<span class="'.$style.'">'.$this->last_page.'</span>';
   }
   return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
}

function nowbar($style='',$nowindex_style='')
{
   $plus=ceil($this->pagebarnum/2);
   if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
   $begin=$this->nowindex-$plus+1;
   $begin=($begin>=1)?$begin:1;
   $return='';
   for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
   {
   if($i<=$this->totalpage){
     if($i!=$this->nowindex)
         $return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
     else
         $return.=$this->_get_text('<span class="'.$nowindex_style.'">'.$i.'</span>');
   }else{
     break;
   }
   $return.="n";
   }
   unset($begin);
   return $return;
}
/**
   * 获取显示跳转按钮的代码
   *
   * @return string
   */
function select($url)
{
   $return='<select name=";pb_page_select"  onchange=open_select(this)>';
   for($i=1;$i<=$this->totalpage;$i++)
   {
   if($i==$this->nowindex){
     $return.='<option value='.$url.$i.' selected>'.$i.'</option>';
   }else{
     $return.='<option value='.$this->_get_url($i).'>'.$i.'</option>';
   }
   }
   unset($i);
   $return.='</select>';
   return $return;
}

/**
   * 获取mysql教程 语句中limit需要的值
   *
   * @return string
   */
function offset()
{
   return $this->offset;
}

/**
   * 控制分页显示风格（你可以增加相应的风格）
   *
   * @param int $mode
   * @return string
   */
function show($mode=1,$url='')
{
   switch ($mode)
   {
   case '1':
     $this->next_page='下一页';
     $this->pre_page='上一页';
     return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select($url).'页';
     break;
   case '2':
     $this->next_page='下一页';
     $this->pre_page='上一页';
     $this->first_page='首页';
     $this->last_page='尾页';
     return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select($url).'页';
     break;
   case '3':
     $this->next_page='下一页';
     $this->pre_page='上一页';
     $this->first_page='首页';
     $this->last_page='尾页';
     return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
     break;
   case '4':
     $this->next_page='下一页';
     $this->pre_page='上一页';
     return $this->pre_page().$this->nowbar().$this->next_page();
     break;
   case '5':
     return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
     break;
   }
 
}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
   * 设置url头地址
   * @param: string $url
   * @return boolean
   */
function _set_url($url="")
{
   if(!empty($url)){
       //手动设置
   $this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
   }else{
       //自动获取
   if(empty($_server['query_string'])){
       //不存在query_string时
     $this->url=$_server['request_uri']."?".$this->page_name."=";
   }else{
       //
     if(stristr($_server['query_string'],$this->page_name.'=')){
         //地址存在页面参数
     $this->url=str_replace($this->page_name.'='.$this->nowindex,'',$_server['request_uri']);
     $last=$this->url[strlen($this->url)-1];
     if($last=='?'||$last=='&'){
         $this->url.=$this->page_name."=";
     }else{
         $this->url.='&'.$this->page_name."=";
     }
     }else{
         //
     $this->url=$_server['request_uri'].'&'.$this->page_name.'=';
     }//end if   
   }//end if
   }//end if
}

/**
   * 设置当前页面
   *
   */
function _set_nowindex($nowindex)
{
   if(empty($nowindex)){
   //系统获取
  
   if(isset($_get[$this->page_name])){
     $this->nowindex=intval($_get[$this->page_name]);
   }
   }else{
       //手动设置
   $this->nowindex=intval($nowindex);
   }
}
 
/**
   * 为指定的页面返回地址值
   *
   * @param int $pageno
   * @return string $url
   */
function _get_url($pageno=1)
{
   return $this->url.$pageno;
}

/**
   * 获取分页显示文字，比如说默认情况下_get_text('<a href="">1</a>')将返回[<a href="">1</a>]
   *
   * @param string $str
   * @return string $url
   */
function _get_text($str)
{
   return $this->format_left.$str.$this->format_right;
}

/**
   * 获取链接地址
*/
function _get_link($url,$text,$style=''){
   $style=(empty($style))?'':'class="'.$style.'"';
   if($this->is_ajax){
       //如果是使用ajax模式
   return '<a '.$style.' href="网页特效:'.$this->ajax_action_name.'(''.$url.'')">'.$text.'</a>';
   }else{
   return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
   }
}
/**
   * 出错处理方式
*/
function error($function,$errormsg)
{
     die('error in file <b>'.__file__.'</b> ,function <b>'.$function.'()</b> :'.$errormsg);
}

/*
 * 计算前台页面的总页数
 * @param total  总记录数
 * @param num    每页的记录数
*/
function sumpage($total,$num)
{
  $nn=0;
  $nn=intval($total/$num);
  if((int)($total%$num)!=0)
  {
     $nn=$nn+1;
  }
  return $nn;
}

}

/*
前台代码调用
function minupage($array)     : 构造函数，参数( 数组(total总页数，perpage每页显示行数，nowindex当前页,url地址,ajax模式) )

使用案例：
$num=20;                          //设置每页显示的记录数
$p=isset($_get['p'])?intval($_get['p']):1;    //获得传递的值，为空时即为零
$total=newssum($sort);       //获得的记录总条数           
$page=new minupage(array('total'=>$total,'perpage'=>$num));    //调用分页类
$p_start=($p-1) * $num;           //计算当页开始的记录数   
$sumpage=&$page->sumpage($total,$num);  //总页数

<?php echo $p?>/<?php echo $sumpage?>页 共<?php echo $total?>条记录，<?php echo $num?>条/页，<?php echo $page->show(4);?>   显示为   11/20 页次 共400条记录 20条/页  上一页 11 12 13 14 15 下一页

分页调用方法

require_once('../libs/www.111cn.net/page.class.php');
$page=new minupage(array('total'=>1000,'perpage'=>20));
echo 'mode:1<br>'.$page->show();
echo '<hr>mode:2<br>'.$page->show(2);
echo '<hr>mode:3<br>'.$page->show(3);
echo '<hr>mode:4<br>'.$page->show(4);
echo '<hr>开始ajax模式:';
$ajaxpage=new minupage(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1<br>'.$ajaxpage->show();
*/

 

我们提供了几种编码转换如有UTF-8 转GB编码 GB转UTF-8编码 Unicode转utf8 unicode url编码转gbk编码函数 GB码转换成Big5码 Big5码转换成GB码 utf8转Unicode等哦。

$uc2gbtable = $codetable = $big5_data = $gb_data = '';
$gbkunidic = null;

//utf-8 转gb编码
function utf82gb($utfstr)
{
 if(function_exists('iconv'))
 {
  return iconv('utf-8','gbk//ignore',$utfstr);
 }
 global $uc2gbtable;
 $okstr = "";
 if(trim($utfstr)=="")
 {
  return $utfstr;
 }
 if(empty($uc2gbtable))
 {
  $filename = dedeinc."/data/gb2312-utf8.dat";
  $fp = fopen($filename,"r");
  while($l = fgets($fp,15))
  {
   $uc2gbtable[hexdec(substr($l, 7, 6))] = hexdec(substr($l, 0, 6));
  }
  fclose($fp);
 }
 $okstr = "";
 $ulen = strlen($utfstr);
 for($i=0;$i<$ulen;$i++)
 {
  $c = $utfstr[$i];
  $cb = decbin(ord($utfstr[$i]));
  if(strlen($cb)==8)
  {
   $csize = strpos(decbin(ord($cb)),"0");
   for($j=0;$j < $csize;$j++)
   {
    $i++; $c .= $utfstr[$i];
   }
   $c = utf82u($c);
   if(isset($uc2gbtable[$c]))
   {
    $c = dechex($uc2gbtable[$c]+0x8080);
    $okstr .= chr(hexdec($c[0].$c[1])).chr(hexdec($c[2].$c[3]));
   }
   else
   {
    $okstr .= "&#".$c.";";
   }
  }
  else
  {
   $okstr .= $c;
  }
 }
 $okstr = trim($okstr);
 return $okstr;
}

 

下面是一款完整的用户在注册前的ajax验证用户名的实现代码，只要按要求保存就可以了。

 

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>ajax用户验证</title>
<style>
body {
 font: 12px , arial, helvetica, sans-serif; color: #808080
}
#reg{
 width: 600px;
 border: 1px dotted #336699;
}
td{font-size:12px;color:}
h1{
 height:35px;
 font-size:16px;
 color:#ffffff;
 background-color: #336699;
 line-height: 30px;
 padding-left:25px;
}

.anniu {
 border-right: #666666 1px solid; padding-right: 1px; border-top: #ffffff 1px solid; padding-left: 1px; font-size: 9pt; padding-bottom: 1px; border-left: #ffffff 1px solid; cursor: hand; color: #333333; padding-top: 1px; border-bottom: #666666 1px solid; font-family: "宋体"; height: 20px; background-color: #eeeeee
}
.framedivpass{
 
 border: 1px solid #6fbe44;
 padding: 2px;
 height: 100%;
 float: left;
}
.framedivwarn{
 
 border: 1px solid #ff0000;
 padding: 2px;
 height: 100%;
 float: left;
}
</style>
<script language="网页特效" type="text/javascript">
 var xmlhttp = false;
 try {
  xmlhttp = new activexobject("msxml2.xmlhttp");
 } catch (e) {
  try {
   xmlhttp = new activexobject("microsoft.xmlhttp");
  } catch (e2) {
   xmlhttp = false;
  }
 }
 if (!xmlhttp && typeof xmlhttprequest != 'undefined') {
  xmlhttp = new xmlhttprequest();
 }
 function ajax(data){ 
  xmlhttp.open("get","user_ck.php教程?username="+document.getelementbyid("username").value,true);
  xmlhttp.send(null);
     document.getelementbyid('username_notice').innerhtml = process_request;//显示状态
  xmlhttp.onreadystatechange=function(){
   if (4==xmlhttp.readystate){
    if (200==xmlhttp.status){
    var responsetext = xmlhttp.responsetext;
       if (responsetext=="true" ){
       ck_user("true");
          }
       else{
       ck_user("false");
       }
    }else{
     alert("发生错误!");
    }
   }
  }
 }
 function chkusername(obj){
      if (checks(obj.value)== false)
    {
   obj.classname = "framedivwarn";
   showinfo("username_notice",msg_un_format);
            change_submit("true");
    }
  else if(obj.value.length<1){
   obj.classname = "framedivwarn";
   showinfo("username_notice",msg_un_blank);
            change_submit("true");
  }

  else if(obj.value.length<3){
   obj.classname = "framedivwarn";
   showinfo("username_notice",username_shorter);
            change_submit("true");
  }
  else{
   //调用ajax函数,向服务器端发送查询
   ajax(obj.value);
  }   

 }

 

下面是一款php数字分页类的代码，己经封装好了的代码，需要的朋友可以参考使用一下。分页的主要原理就是获取当前页面，再判断一页多少条记录相除，得出总记录，就这么简单了。

function getnavhtml($pagenum,$pagesize,$rowcount,$navurl){
$pagecount = (int)($rowcount/$pagesize); //总页数
if ($rowcount % $pagesize >0){
$pagecount++;
}
if ($pagenum>$pagecount){
$pagenum = 1;
}
$firstnav = "<a href="{$navurl}page=1">首页</a> ";
$lastnav = "<a href="{$navurl}page={$pagecount}">尾页</a> ";
$prevnav="";
$nextnav="";
if ($pagenum>1){
$navpagenum = $pagenum-1;
$prevnav = "<a href="{$navurl}page={$navpagenum}">上一页</a> ";
}
if ($pagenum<$pagecount && $pagecount>1){
$navpagenum = $pagenum+1;
$nextnav = "<a href="{$navurl}page={$navpagenum}">下一页</a> ";
}
$amongnav="";

//关键循环

for ($i=1;$i<=5;$i++){
$navpagenum = $pagenum+ $i-3;
if ($navpagenum>0 && $navpagenum<=$pagecount){
$navcss教程 = $navpagenum == $pagenum?" class="hover"":"";
$amongnav.="<a href="{$navurl}page={$navpagenum}" $navcss>{$navpagenum}</a> ";
}
}
return $firstnav.$prevnav.$amongnav.$nextnav.$lastnav." ".$pagenum."/".$pagecount." 共有[".$rowcount."]条数据";
}
}

/**
* 获取页码导航html
* @param $pagenum：当前页码
* @param $pagesize：每页数量
* @param $rowcount：记录总数
* @param $navurl：链接页面url
*/