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php分页

[PHP]代码

<?php
/**
 * 分页类
 * 
 * author  lynnluo
 * addtime 2011-08-15
 */

define( 'PAGE_NAME','page' );// url '....php?page=2'中的page名称
define( 'CR',"\n" );// 换行符

class page
{
    private $prev_label  = ' 上一页 ';//
    private $next_label  = ' 下一页 ';//
    private $first_label = ' 首页 ';//
    private $last_label  = ' 尾页 ';// 

    private $per_page   = 10;//每页显示多少条
    private $adjacent_num   = 2;//当前页相邻的显示量
    private $page_num;  //总页数
    private $page;      //第几页

    private $html;//返回分页的html源码

    private $display_str_flag = true;//首页和尾页用字符串or数字显示  true:字符串     其它则显示数字

    /**
     * 构造函数
     * $per_page int 每页显示多少条
     * $totle int   总数量 
     */
    public function __construct( $per_page, $totle )
    {
        $this->per_page = intval($per_page)<1 ? $this->per_page : intval($per_page);//每页显示条数小于1时 默认为10
        $this->page_num = ceil( $totle / $this->per_page );
        $this->page     = isset($_GET[PAGE_NAME]) ? ( (intval($_GET[PAGE_NAME])>0) ? intval($_GET[PAGE_NAME]):1) : 1;//当前页码小于1时默认为第一页
        $this->page     = $this->page > $this->page_num ?  $this->page_num : $this->page;//当前页码超过最大页码时默认为最后一页

        $this->html     = '';
    }

    /**
     * 私有属性赋值时的错误处理
     */ 
    public function __set( $aa ,$bb){}

    /**
     * 配置类的私有属性  
     * $ary  array  键值对,键为该类的私有属性
     */
    public function set( $ary = array(  'display_str_flag'=>false,
                                        'prev_label'=>'>>',
                                        'next_label'=>'>>',
                                        'first_label'=>'>>',
                                        'last_label'=>'>>',
                                        'adjacent_num'=>5))
    {
        foreach( $ary as $key=>$value )
        {
            $this->{$key} = $value;
        }
    }

    /**
     * 返回当前URL
     */
    private function getURL()
    {
        $url = $_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],'?')?'':"?");
        $parse=parse_url($url);
        if(isset($parse['query']))
        {
            parse_str($parse['query'],$params);
            unset($params[PAGE_NAME]);
            $url = $parse['path'].'?'.http_build_query($params);
        }
        $url .= strpos($url, '?') ? (strpos($url, '=')?'&':'') : '' ;
        return $url;
    }

    /**
     * 首页
     */
    private function first_page()
    {
        if( $this->page == 1 )
        {
            $this->html .= '<span>' . $this->first_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=1">' . $this->first_label . '</a>'.CR;
        }
    }

    /**
     * 尾页
     */
    private function last_page()
    {
        if( $this->page == $this->page_num )
        {
            $this->html .= '<span>' . $this->last_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'='.$this->page_num.'">' . $this->last_label . '</a>'.CR;
        }
    }

    /**
     * 上一页
     */
    private function prev_page()
    {
        if( $this->page == 1 )
        {
            $this->html .= '<span>' . $this->prev_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . ( $this->page - 1 ) . '">' . $this->prev_label . '</a>'.CR;
        }
    }

    /**
     * 下一页
     */
    private function next_page()
    { 
        if( $this->page < $this->page_num) 
        {
            $this->html .= '<a href="' . $this->getURL().PAGE_NAME.'=' . ( $this->page+1) . '">' . $this->next_label . '</a>'.CR;
        }
        else 
        {
            $this->html .= '<span>' . $this->next_label . '</span>'.CR;
        }
    }

    /**
     * 第一块  第一个省略号前的那块
     */
    private function first_block()
    {
        if( $this->page > ( $this->adjacent_num+1 ) ) 
        {
            $this->html.= '<a href="' . $this->getURL().PAGE_NAME.'=1">1</a>'.CR;
        }
        if( $this->page > ( $this->adjacent_num+2 ) ) 
        {
            $this->html.= '...'.CR;
        }
    }

    /**
     * 第二块  两个省略号中间的那块
     */
    private function middle_block()
    {
        $page_min = ( $this->page > $this->adjacent_num ) ? ( $this->page - $this->adjacent_num ) : 1;
        $page_max = ( $this->page < ($this->page_num-$this->adjacent_num)) ? ($this->page+$this->adjacent_num) : $this->page_num ;
        for( $i=$page_min; $i<=$page_max; $i++)
        {
            if( $i == $this->page ) 
            {
                $this->html .= '<span class="current">' . $i . '</span>'.CR;
            }
            else
            {
                $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . $i . '">' . $i . '</a>'.CR;
            }
        }
    }

    /**
     * 最后一块  最后一个省略号后的的那块
     */
    private function last_block()
    {
        if( $this->page < ($this->page_num - $this->adjacent_num - 1)) 
        {
            $this->html .= '...'.CR;
        }
        if( $this->page < ($this->page_num-$this->adjacent_num )) 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . $this->page_num . '">' . $this->page_num . '</a>'.CR;
        }
    }

    /**
     * 显示分页
     * 
     * $out_flag bool 输出和反回分页html的标志  true:直接输出   false:返回分页的html
     * 
     */
    public function display( $out_flag = false ) 
    {       
        $this->html = '<div class="pagin">'.CR;

        if( $this->display_str_flag === true )
        {//首页和尾页用字符串显示
            $this->first_page();    //显示首页
            $this->prev_page();     //显示上一页
            $this->middle_block();  //显示中间块
            $this->next_page();     //显示下一页 
            $this->last_page();     //显示最后一页 
        }
        else 
        {//首页和尾页用数字显示
            $this->prev_page();     //显示上一页
            $this->first_block();   //显示第一块
            $this->middle_block();  //显示中间块
            $this->last_block();    //显示最后一块
            $this->next_page();     //显示下一页
        }

        $this->html .= '</div>';

        if($out_flag === false)
        {//返回分页 html码
            return $this->html;
        }
        else
        {//输出分页 html码
            echo $html;
        }
    }
}

/*************demo **************/
$page = new page(3,55); 
$page->set( $ary = array( 'display_str_flag'=>false,
                            'prev_label'=>'上',
                            'next_label'=>'下一页',
                            'last_label'=>'末',));
echo $page->display();
/*************demo **************/
?>

分页类&nbsp;~&nbsp;6KB&nbsp;&nbsp;&nbsp;&nbsp;下载(39)

<?php
/**
 * 分页类
 * 
 * author  lynnluo
 * addtime 2011-08-15
 */

define( 'PAGE_NAME','page' );// url '....php?page=2'中的page名称
define( 'CR',"\n" );// 换行符

class page
{
    private $prev_label  = ' 上一页 ';//
    private $next_label  = ' 下一页 ';//
    private $first_label = ' 首页 ';//
    private $last_label  = ' 尾页 ';// 

    private $per_page   = 10;//每页显示多少条
    private $adjacent_num   = 2;//当前页相邻的显示量
    private $page_num;  //总页数
    private $page;      //第几页

    private $html;//返回分页的html源码

    private $display_str_flag = true;//首页和尾页用字符串or数字显示  true:字符串     其它则显示数字

    /**
     * 构造函数
     * $per_page int 每页显示多少条
     * $totle int   总数量 
     */
    public function __construct( $per_page, $totle )
    {
        $this->per_page = intval($per_page)<1 ? $this->per_page : intval($per_page);//每页显示条数小于1时 默认为10
        $this->page_num = ceil( $totle / $this->per_page );
        $this->page     = isset($_GET[PAGE_NAME]) ? ( (intval($_GET[PAGE_NAME])>0) ? intval($_GET[PAGE_NAME]):1) : 1;//当前页码小于1时默认为第一页
        $this->page     = $this->page > $this->page_num ?  $this->page_num : $this->page;//当前页码超过最大页码时默认为最后一页

        $this->html     = '';
    }

    /**
     * 私有属性赋值时的错误处理
     */ 
    public function __set( $aa ,$bb){}

    /**
     * 配置类的私有属性  
     * $ary  array  键值对,键为该类的私有属性
     */
    public function set( $ary = array(  'display_str_flag'=>false,
                                        'prev_label'=>'>>',
                                        'next_label'=>'>>',
                                        'first_label'=>'>>',
                                        'last_label'=>'>>',
                                        'adjacent_num'=>5))
    {
        foreach( $ary as $key=>$value )
        {
            $this->{$key} = $value;
        }
    }

    /**
     * 返回当前URL
     */
    private function getURL()
    {
        $url = $_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],'?')?'':"?");
        $parse=parse_url($url);
        if(isset($parse['query']))
        {
            parse_str($parse['query'],$params);
            unset($params[PAGE_NAME]);
            $url = $parse['path'].'?'.http_build_query($params);
        }
        $url .= strpos($url, '?') ? (strpos($url, '=')?'&':'') : '' ;
        return $url;
    }

    /**
     * 首页
     */
    private function first_page()
    {
        if( $this->page == 1 )
        {
            $this->html .= '<span>' . $this->first_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=1">' . $this->first_label . '</a>'.CR;
        }
    }

    /**
     * 尾页
     */
    private function last_page()
    {
        if( $this->page == $this->page_num )
        {
            $this->html .= '<span>' . $this->last_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'='.$this->page_num.'">' . $this->last_label . '</a>'.CR;
        }
    }

    /**
     * 上一页
     */
    private function prev_page()
    {
        if( $this->page == 1 )
        {
            $this->html .= '<span>' . $this->prev_label . '</span>'.CR;
        }
        else 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . ( $this->page - 1 ) . '">' . $this->prev_label . '</a>'.CR;
        }
    }

    /**
     * 下一页
     */
    private function next_page()
    { 
        if( $this->page < $this->page_num) 
        {
            $this->html .= '<a href="' . $this->getURL().PAGE_NAME.'=' . ( $this->page+1) . '">' . $this->next_label . '</a>'.CR;
        }
        else 
        {
            $this->html .= '<span>' . $this->next_label . '</span>'.CR;
        }
    }

    /**
     * 第一块  第一个省略号前的那块
     */
    private function first_block()
    {
        if( $this->page > ( $this->adjacent_num+1 ) ) 
        {
            $this->html.= '<a href="' . $this->getURL().PAGE_NAME.'=1">1</a>'.CR;
        }
        if( $this->page > ( $this->adjacent_num+2 ) ) 
        {
            $this->html.= '...'.CR;
        }
    }

    /**
     * 第二块  两个省略号中间的那块
     */
    private function middle_block()
    {
        $page_min = ( $this->page > $this->adjacent_num ) ? ( $this->page - $this->adjacent_num ) : 1;
        $page_max = ( $this->page < ($this->page_num-$this->adjacent_num)) ? ($this->page+$this->adjacent_num) : $this->page_num ;
        for( $i=$page_min; $i<=$page_max; $i++)
        {
            if( $i == $this->page ) 
            {
                $this->html .= '<span class="current">' . $i . '</span>'.CR;
            }
            else
            {
                $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . $i . '">' . $i . '</a>'.CR;
            }
        }
    }

    /**
     * 最后一块  最后一个省略号后的的那块
     */
    private function last_block()
    {
        if( $this->page < ($this->page_num - $this->adjacent_num - 1)) 
        {
            $this->html .= '...'.CR;
        }
        if( $this->page < ($this->page_num-$this->adjacent_num )) 
        {
            $this->html .= '<a href="' . $this->getURL() .PAGE_NAME.'=' . $this->page_num . '">' . $this->page_num . '</a>'.CR;
        }
    }

    /**
     * 显示分页
     * 
     * $out_flag bool 输出和反回分页html的标志  true:直接输出   false:返回分页的html
     * 
     */
    public function display( $out_flag = false ) 
    {       
        $this->html = '<div class="pagin">'.CR;

        if( $this->display_str_flag === true )
        {//首页和尾页用字符串显示
            $this->first_page();    //显示首页
            $this->prev_page();     //显示上一页
            $this->middle_block();  //显示中间块
            $this->next_page();     //显示下一页 
            $this->last_page();     //显示最后一页 
        }
        else 
        {//首页和尾页用数字显示
            $this->prev_page();     //显示上一页
            $this->first_block();   //显示第一块
            $this->middle_block();  //显示中间块
            $this->last_block();    //显示最后一块
            $this->next_page();     //显示下一页
        }

        $this->html .= '</div>';

        if($out_flag === false)
        {//返回分页 html码
            return $this->html;
        }
        else
        {//输出分页 html码
            echo $html;
        }
    }
}

/*************demo **************/
$page = new page(3,55); 
$page->set( $ary = array( 'display_str_flag'=>false,
                            'prev_label'=>'上',
                            'next_label'=>'下一页',
                            'last_label'=>'末',));
echo $page->display();
/*************demo **************/
?>

标签:分页

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