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Homephp教程PHP源码PHP简单分页函数代码总结

在我做过这么多的php开发了我发现两种分页类型,一种分页是直接把数据库连接与分页连接在了一起,别一种分页函数只有分页的逻辑判断并没有数据库的参与了,后者更好维护与重复使用一些,前者维护麻烦不好重复利用,下面我都给大家整理几个例子。

<script>ec(2);</script>

例子一,这个分页函数就有连接数据库再查看
代码不详细解说了,注释里有

 代码如下 复制代码

  //page当前页,num每页的页数
  $page=isset($_GET['page'])?intval($_GET['page']):1;
  $num=5;
  $conn = mysql_connect('127.0.0.1','root','');
  if (!$conn) {
   die('Could not connect:'.mysql_error());
  }
  mysql_select_db('shop');
  //获取记录总数
  $total=mysql_num_rows(mysql_query("select * from user"));
  //计算页数
  $pagenum=ceil($total/$num);
  //限制页数不能超 www.111cn.net 出范围
  If($page>$pagenum || $page == 0){
    Echo 'Error : Can Not Found The page.';
    Exit;
  }
  //语句“Select * from table limit 0,10”从table表提取十条信息,0为起点,10为提取的数目
  //$offset为起点值,如当前页为第一页,每页5条,起点即为0,同理当前为第二页,起点将为5
  $offset=($page-1)*$num;
  $result=mysql_query("select * from user limit $offset,$num");
  while($it=mysql_fetch_array($result)){
    echo 'id:'.$it['id'].' name:'.$it['name'].'
';
  }
  //显示链接页面切换链接,当前页无链接
  for($i=1;$i     $show=($i!=$page)?"$i":"$i";
    echo $show." ";
  }
  echo $total.'条记录,每页5条,共'.$pagenum.'页';
   mysql_free_result($result);
  mysql_close($conn);
?>

例子二,直接的把分页代码逻辑提出来,重复利用比较好

 代码如下 复制代码

  /*
    #函数:csPage
    #功能:返回页面列表
  */
  Function csPage($iPage,$aPage,$urlStart,$urlEnd){
    $tmp = "";
    if($iPage == 1 && $aPage == 1){
      $tmp = " 1/1 ";
    }else{
      if($iPage == 1){
        $tmp = " | ";
      }else{
        $tmp = ' | ';
      }
      $tmp .= " " . $iPage . "/" . $aPage . " ";
      if($iPage == $aPage){
        $tmp .= ' >> >| ';
      }else{
        $tmp .= '
>> >| ';
      }
    }
    return $tmp;
  }
  ?>

总结一下,

如果让我们选择可能我会选择第二种方法这样维护好实现方法简单,第一种分页适合初学者合适简单但维护复杂。

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