数组分页去数据

今天遇到这种情况，图书的ID都存在cookie中，获得的cookie值是

"537975,467452,556978,464954,2531,1878,457036,3431,469552,537693,465265,462728,484600,561234,559843,554795,"

而产品经理还要求分页，以前的分页都是对数据库的分页操作。下面是对数据的分页

#获得的当前页数

$page       = $_GET('page')?$_GET('page'):1;

#每页数量

$pageNum    = 5;

#获得cookie值

$playCookie = "537975,467452,556978,464954,2531,1878,457036,3431,469552,537693,465265,462728,484600,561234,559843,554795,"

#分割数组

$playCookie = explode(',', trim($playCookie,','));

$count      = count($playCookie);

$start      = (page-1)*$pageNum;

$end        = $start + $pageNum;

#重新定义一个数组

$play       = array();

if ($end > $count) {

  $end      = $count; 

}

#分页数据放到新的数组中

for($i=$start; $i < $end; $i++) {

  $play[]   = $playCookie[$i];

}