php+mysql分页类(php分页打印页码和链接)

<?php      
/*     
php分页类：mysql_pager.class.php     
三个参数：mysql_query()的结果, url变量page, 您要的每页记录数     
edit: www.jb200.com
*/      

class mysql_pager {      
  // define properties      
  var $page;      
  var $result;      
  var $results_per_page = 3;      
  var $total_pages;        

/*       
Define the methods     

  下面是构造函数，和类同名（>php4）     
   需要查询的结果句柄，当前页码，每页记录数     
   like:  $f->mysql_pager($result, 1, 15);     
*/      

function mysql_pager( $result, $current_page, $results_per_page ) {      

    if(!$result){      
        echo "<div align=center>数据库未运行，结果集错误</div>n";        
        return;      
        }      

   $this->result = $result;      

   if(!$current_page || $current_page < 0)        
        $this->page = 1;      
   else $this->page = $current_page;      

   if(!emptyempty($results_per_page))        
      $this->results_per_page = $results_per_page;      

   $numrows = @mysql_num_rows($this->result);        
   if(!$numrows) {      
      echo "<div align=center>查询结果为空.</div>n";      
      return;      
      }      

   $this->total_pages = ceil($numrows / $this->results_per_page);        
}      

/*       
  下面是打印内容的函数，可以不用，也可以根据自己的需要扩展     
  这里只是打印出id     
*/      

function print_paged_results() {        
    echo "<table border=0 align=center>n";      
    $start = ($this->page - 1) * $this->results_per_page;      
    mysql_data_seek($this->result, $start);      
    $x = 0;      
    for($i = 1; $i <= $this->results_per_page && $row = @mysql_fetch_array($this->result); $i++) {      
        if($x++ & 1) $bgcolor = "#F2F2FF";      
        else $bgcolor = "#EEEEEE";      

        echo "<tr bgcolor=$bgcolor><td>". $row["id"] . "</td></tr>";            
        // 编辑这部分输出任何您想要的HTML      

        }      

       echo "</table>n";      
}      

/*       
  下面是打印页码和链接的函数     
  在需要显示页码的地方调用     
*/      

function print_navigation() {      
    global $PHP_SELF;      

    echo "<div align=center>";      

    for($i = 1; $i <= $this->total_pages; $i++) { #loop to print << 1 2 3... $total_pages >>        
       if($i == 1 && $this->page > 1)  #Prints the << first to goto the previous page (not on page 1)        
          echo "<a href="$PHP_SELF?page=".($this->page - 1)."" onMouseOver="status="Previous Page";return true;" onMouseOut="status=" ";return true;">?</a>";        

       if($i == $this->page)  #Doesn"t print a link itself, just prints page number       
          echo "<font color="#ff3333"> $i </font>";        

       if($i != $this->page)  #Other links that aren"t this page go here       
          echo "<a href="$PHP_SELF?page=$i" onMouseOver="status="Go to Page $i";return true;" onMouseOut="status=" ";return true;"> $i </a>";        

       if($i == $this->total_pages && $this->page != $this->total_pages)  #  Link for next page >>  (not on last page)        
          echo "<a href="$PHP_SELF?page=".($this->page + 1)."" onMouseOver="status="Go to the Next Page";return true;" onMouseOut="status=" ";return true;">?</a>";        
       }      

    echo "</div>n";        
  }      

}      

/*     
   mysql_connect($server, $uname, $pass );     
   mysql_select_db("$db");     
   $result= @mysql_query("Select * FROM table");     

   $p = new mysql_pager( $result, $page=$_GET["page"], 10 );     
   $p->print_navigation();     
   $p->print_paged_results();     
   $p->print_navigation();     
*/      
?>