php分页代码实例

function pagestring($count, $pagesize, $wap=false) {  

    $p = new Pager($count, $pagesize, 'page');  

    if ($wap) {  

        return array($pagesize, $p->offset, $p->genWap());  

    }  

    return array($pagesize, $p->offset, $p->genBasic());  

}  
 
 
pagestring文件  
 

php 

 
class Pager{  
 

    public $rowCount = 0;  


    public $pageNo = 1;  


    public $pageSize = 20;  


    public $pageCount = 0;  


    public $offset = 0;  


    public $pageString = 'page';  

 

    private $script = null;  


    private $valueArray = array();  

 

    public function __construct($count=0, $size=20, $string='page')  

    {  

        $this->defaultQuery();  


        $this->pageString = $string;  


        $this->pageSize = abs($size);  


        $this->rowCount = abs($count);  

 

        $this->pageCount = ceil($this->rowCount/$this->pageSize);  


        $this->pageCount = ($this->pageCount=0)?1:$this->pageCount;  


        $this->pageNo = abs(intval(@$_GET[$this->pageString]));  


        $this->pageNo = $this->pageNo==0 ? 1 : $this->pageNo;  


        $this->pageNo = $this->pageNo>$this->pageCount   


            ? $this->pageCount : $this->pageNo;  


        $this->offset = ( $this->pageNo - 1 ) * $this->pageSize;  

    }  
 
    private function genURL( $param, $value ){  

        $valueArray = $this->valueArray;  

        $valueArray[$param] = $value;  

        return $this->script . '?' . http_build_query($valueArray);  

    }  
 
    private function defaultQuery()  
    {  

        ($script_uri = @$_SERVER['SCRIPT_URI'])  ($script_uri = @$_SERVER['REQUEST_URI']);  


        $q_pos = strpos($script_uri,'?');  


        if ( $q_pos > 0 )  

        {  

            $qstring = substr($script_uri, $q_pos+1);  

            parse_str($qstring, $valueArray);  

            $script = substr($script_uri,0,$q_pos);  

        }  
        else  
        {  

            $script = $script_uri;  


            $valueArray = array();  

        }  

        $this->valueArray = empty($valueArray) ? array() : $valueArray;  


        $this->script = $script;  

    }  
 

    public function paginate($switch=1){  


        $from = $this->pageSize*($this->pageNo-1)+1;  


        $from = ($from>$this->rowCount) ? $this->rowCount : $from;  


        $to = $this->pageNo * $this->pageSize;  


        $to = ($to>$this->rowCount) ? $this->rowCount : $to;  


        $size = $this->pageSize;  


        $no = $this->pageNo;  


        $max = $this->pageCount;  


        $total = $this->rowCount;  

 
        return array(  

            'offset' => $this->offset,  


            'from' => $from,  


            'to' => $to,  


            'size' => $size,  


            'no' => $no,  


            'max' => $max,  


            'total' => $total,  

        );  
    }  
 
    public function GenWap() {  

        $r = $this->paginate();  


        $pagestring= '
';  


        if( $this->pageNo > 1 ){  


            $pageString.= '4 >genURL($this->pageString, $this->pageNo-1) . '" accesskey="4">上页a>';  

        }  

        if( $this->pageNo >1 && $this->pageNo  $this->pageCount ){  


            $pageString.= '｜';  

        }  

        if( $this->pageNo  $this->pageCount ) {  


            $pageString.= '>genURL($this->pageString, $this->pageNo+1) . '" accesskey="6">下页a> 6';  

        }  

        $pageString.= '';  

        return $pageString;  
    }  
 
    public function GenBasic() {  

        $r = $this->paginate();  


        $buffer = null;  


        $index = '首页';  


        $pre = '上一页';  


        $next = '下一页';  


        $last = '末页';  

 

        if ($this->pageCount=7) {   


            $rangerange = range(1,$this->pageCount);  

        } else {  

            $min = $this->pageNo - 3;  


            $max = $this->pageNo + 3;  


            if ($min  1) {  

                $max += (3-$min);  

                $min = 1;  

            }  

            if ( $max > $this->pageCount ) {  


                $min -= ( $max - $this->pageCount );  


                $max = $this->pageCount;  

            }  

            $min = ($min>1) ? $min : 1;  


            $rangerange = range($min, $max);  

        }  
          

        $buffer .= '
';  


        $buffer .= "
({$this->rowCount})
";  


        if ($this->pageNo > 1) {  


            $buffer .= "
>{$index}a>li>a href='http://www.cxybl.com/".$this->genURL($this->pageString,$this->pageNo-1)."'>{$pre}a>";  
        }  
        foreach($range AS $one) {  

            if ( $one == $this->pageNo ) {  


                $buffer .= "li class=\"current\">{$one}li>";  

            } else {  

                $buffer .= "
>{$one}a>li>";  
            }  
        }  

        if ($this->pageNo  $this->pageCount) {  


            $buffer .= "
>{$next}a>li>li>a href='http://www.cxybl.com/".$this->genURL($this->pageString, $this->pageCount)."'>{$last}a>li>";  
        }  

        return $buffer . 'ul>';  

    }  
}  

?>