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php : 自定义分页类
Page.class.php :
<?phpnamespace Tools;class Page{ private $total; //数据表中总记录数 private $listRows; //每页显示行数 private $limit; private $uri; private $pageNum; //页数 private $config = array(‘header‘ => "个记录", "prev" => "上一页", "next" => "下一页", "first" => "首 页", "last" => "尾 页"); private $listNum = 8; /* * $total * $listRows */ public function __construct($total, $listRows = 10, $pa = "") { $this->total = $total; $this->listRows = $listRows; $this->uri = $this->getUri($pa); $this->page = !empty($_GET["page"]) ? $_GET["page"] : 1; $this->pageNum = ceil($this->total / $this->listRows); $this->limit = $this->setLimit(); } private function setLimit() { return "Limit " . ($this->page - 1) * $this->listRows . ", {$this->listRows}"; } private function getUri($pa) { $url = $_SERVER["REQUEST_URI"] . (strpos($_SERVER["REQUEST_URI"], ‘?‘) ? ‘‘ : "?") . $pa; $parse = parse_url($url); if (isset($parse["query"])) { parse_str($parse[‘query‘], $params); unset($params["page"]); $url = $parse[‘path‘] . ‘?‘ . http_build_query($params); } return $url; } public function __get($args) { if ($args == "limit") { return $this->limit; } else { return null; } } private function start() { if ($this->total == 0) { return 0; } else { return ($this->page - 1) * $this->listRows + 1; } } private function end() { return min($this->page * $this->listRows, $this->total); } private function first() { $html = ""; if ($this->page == 1) { $html .= ‘‘; } else { $html .= " <a href=http://www.mamicode.com/‘{$this->uri}&page=1‘>{$this->config["first"]}</a> "; } return $html; } private function prev() { $html = ""; if ($this->page == 1) { $html .= ‘‘; } else { $html .= " <a href=http://www.mamicode.com/‘{$this->uri}&page=" . ($this->page - 1) . "‘>{$this->config["prev"]}</a> "; } return $html; } private function pageList() { $linkPage = ""; $inum = floor($this->listNum / 2); for ($i = $inum; $i >= 1; $i--) { $page = $this->page - $i; if ($page < 1) { continue; } $linkPage .= " <a href=http://www.mamicode.com/‘{$this->uri}&page={$page}‘>{$page}</a> "; } $linkPage .= " {$this->page} "; for ($i = 1; $i <= $inum; $i++) { $page = $this->page + $i; if ($page <= $this->pageNum) { $linkPage .= " <a href=http://www.mamicode.com/‘{$this->uri}&page={$page}‘>{$page}</a> "; } else { break; } } return $linkPage; } private function next() { $html = ""; if ($this->page == $this->pageNum) { $html .= ‘‘; } else { $html .= " <a href=http://www.mamicode.com/‘{$this->uri}&page=" . ($this->page + 1) . "‘>{$this->config["next"]}</a> "; } return $html; } private function last() { $html = ""; if ($this->page == $this->pageNum) { $html .= ‘‘; } else { $html .= " <a href=http://www.mamicode.com/‘{$this->uri}&page=" . ($this->pageNum) . "‘>{$this->config["last"]}</a> "; } return $html; } private function goPage() { return ‘ <input type="text" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>‘ . $this->pageNum . ‘)?‘ . $this->pageNum . ‘:this.value;location=\‘‘ . $this->uri . ‘&page=\‘+page+\‘\‘}" value="http://www.mamicode.com/‘ . $this->page . ‘" style="width:25px"><input type="button" value="http://www.mamicode.com/GO" onclick="javascript:var page=(this.previousSibling.value>‘ . $this->pageNum . ‘)?‘ . $this->pageNum . ‘:this.previousSibling.value;location=\‘‘ . $this->uri . ‘&page=\‘+page+\‘\‘"> ‘; } public function fpage($display = array(0, 1, 2, 3, 4, 5, 6, 7, 8)) { $html[0] = " 共有<b>{$this->total}</b>{$this->config["header"]} "; $html[1] = " 每页显示<b>" . ($this->end() - $this->start() + 1) . "</b>条，本页<b>{$this->start()}-{$this->end()}</b>条 "; $html[2] = " <b>{$this->page}/{$this->pageNum}</b>页 "; $html[3] = $this->first(); $html[4] = $this->prev(); $html[5] = $this->pageList(); $html[6] = $this->next(); $html[7] = $this->last(); $html[8] = $this->goPage(); $fpage = ‘‘; foreach ($display as $index) { $fpage .= $html[$index]; } return $fpage; }}
使用例子:
$goods = D("Goods");// 1)分页设置$total = $goods->count(); // 总记录数$listRows = 7; // 每页显示条数// 2)实例化分页对象$page = new \Tools\Page($total, $listRows);// 3)分页 sql 语句$sql = "select * from sw_goods order by goods_id desc " . $page->limit;//limit 方法返回‘limit xx,xx‘$info = $goods->query($sql);// 4)制作页码列表$fpage = $page->fpage(array(3,4,5,6,7,8)); // 前面的统计信息不要// 5)分配数组$this->assign("info", $info);$this->assign("pagelist", $fpage);$this->display("showgoodslist"); 
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php : 自定义分页类
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