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class Page
{
public $limit; //存儲limit條件
public $allPage; //存儲總頁數(shù)
public $current; //存儲當前頁
public $total; //存儲總條數(shù)
public function __construct($total, $num = 5)
{
//計算總頁數(shù)
$this->allPage = ceil($total/$num);
//處理當前頁
$this->current();
//3,3 6,3
$this->limit = (($this->current-1)*$num).','.$num;
$this->total = $total;
}
protected function current()
{
$p = isset($_GET['p']) ? $_GET['p'] : 1;
// $p = max(1, $p); //最小不能小于1
// $p = min($p, $this->allPage);//最大不能超過總頁數(shù)
if ($p < 1) $p = 1;
if ($p > $this->allPage) $p = $this->allPage;
$this->current = (int)$p;
}
public function show()
{
$first = $end = $pre = $next = $_GET;//處理上一頁$pre['p'] = $this->current - 1;
$preStr = http_build_query($pre);
//處理下一頁$next['p'] = $this->current + 1;$nextStr = http_build_query($next);
//處理首頁$first['p'] = 1;
$firstStr = http_build_query($first);
//處理尾頁$end['p'] = $this->allPage;
$endStr = http_build_query($end);
$str = "共{$this->total}條數(shù)據(jù) 第{$this->current}/{$this->allPage}頁 | ";
$str .= "首頁| ";$str .= "上一頁| ";$str .= "下一頁| ";$str .= "尾頁";
return $str;
}
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