PHP中array_slice函数用法介绍

    var_dump(array_slice($arr,0,2));
   
   
    echo "<br/>";
   
    $arr2 = array('a'=>array('a','a','a'),'b'=>array('b','b','b'));
   
    var_dump(array_slice($arr2,0,1));
?>

//假定一个结果集二维数组：

   $arr = array(array('name'=> 'name1','sex' => 'sex1','job' => 'job1'),
              array('name'=> 'name2','sex' => 'sex2','job' => 'job2'),
              array('name'=> 'name3','sex' => 'sex3','job' => 'job3'),
              array('name'=> 'name4','sex' => 'sex4','job' => 'job4'),
              array('name'=> 'name5','sex' => 'sex5','job' => 'job5'),
              array('name'=> 'name6','sex' => 'sex6','job' => 'job6'),
              array('name'=> 'name7','sex' => 'sex7','job' => 'job7'),
              array('name'=> 'name8','sex' => 'sex8','job' => 'job8'),
              array('name'=> 'name9','sex' => 'sex9','job' => 'job9'),
              array('name'=> 'name10','sex' => 'sex10','job' => 'job10'),
              array('name'=> 'name11','sex' => 'sex11','job' => 'job11'),
              array('name'=> 'name12','sex' => 'sex12','job' => 'job12'),
     );

 
 //计算总记录条数
 $num = count($arr);
 //规定每页显示的条数
 $perpage = 3;
 //计算页数
 $pages = ceil($num/$perpage);
 //echo $num,$perpage,$pagecount;exit;
 if(is_numeric($_REQUEST['page']))
 {
  if($_REQUEST['page']<1){
   $page = 1;
  }elseif($_REQUEST['page']>$pages)
  {
   $page = $pages;
  }else{
  $page = $_REQUEST['page'];
   }
 }else{
  $page = 1;
 }
 $start = ($page-1)*$perpage;
 $newpage = array_slice($arr,$start,$perpage,true);
 //print_r($newpage);exit;
?>
<table cellpadding="0" cellspacing="0" border="1">
 <tr>
  <td>name</td>
  <td>sex</td>
  <td>job</td>
 </tr>
<?php
 foreach($newpage as $k => $v)
{
?>
 <tr>
  <td><?php echo  $v['name']; ?></td>
  <td><?php echo  $v['sex']; ?></td>
  <td><?php echo  $v['job']; ?></td>
 </tr>

<?php
}
?>
</table>
<?php
if($page>1){
 echo "<a href='?page=1'>首页</a>";
 echo "<a href='?page=".($page-1)."'>上一页</a>";
}
if($page<$pages)
{
 echo "<a href='?page=".($page+1)."'>下一页</a>";
 echo "<a href='?page=".$pages."'>末页</a>";
}
?>