php数组分页

<?php
$arr_click = array(
array( 'clicks' => 3, 'clickDate' =>'2010-10-11' ),
array( 'clicks' => 2, 'clickDate' =>'2010-10-10' ),
array( 'clicks' => 3, 'clickDate' =>'2010-10-09' ),
array( 'clicks' => 4, 'clickDate' =>'2010-10-08' ),
array( 'clicks' => 5, 'clickDate' =>'2010-10-13' ),
array( 'clicks' => 7, 'clickDate' =>'2010-10-14' ),
array( 'clicks' => 6, 'clickDate' =>'2010-10-15' ),
array( 'clicks' => 9, 'clickDate' =>'2010-10-16' ),
);
//print_r($arr_click);
if(!isset($_GET['page']))
{
    $page = 1;
}
else
{
 $page=$_GET['page'];
}
$size=1;//每页显示的记录数
$pnum = ceil(count($arr_click) / $size);  //总页数，ceil()函数用于求大于数字的最小整数
//用array_slice(array,offset,length) 函数在数组中根据条件取出一段值;array(数组),offset(元素的开始位置),length(组的长度)
$newarr = array_slice($arr_click, ($page-1)*$size, $size);
for($i=0;$i<count($newarr);$i++)
{
 echo $newarr[$i]['clickDate']."<br/>";
}
?>

<?php
if(!isset($_GET['page']) || $_GET['page']<=1){
?>
<a href="doing_date.php?page=1">上一页</a>
<?php }else{ ?>
<a href="doing_date.php?page=<?php echo $page-1;?>">上一页</a>
<?php } 
die();
?>