在這裡和大家分享一個非常好用的 Zend Framework 分頁類
具體效果可見本站的分頁效果， CSS樣式可根據個人設計感進行更變。
這裡我會舉例演示如何使用該類， 如下:
IndexController.php， 在 Action 中寫入如下代碼:
復制代碼 代碼如下:
protected $_curPage = 1; //默認第一頁
const PERPAGENUM = 4; //每頁顯示條目數
public function indexAction()
{
// $this->_blogModel 已實例化 blog Model
// $rows -> 獲得到所展示數據的總條目數
$rows = $this->_blogModel->getTotalRows();
if($pageNum = $this->getRequest()->getParam('page')) {
//如果有值傳入，覆蓋初始的第一頁
$this->_curPage = $pageNum;
}
//把數據表中的數據傳到前端
$this->view->blogInfo = $this->_blogModel->getBlogInfo(
self::PERPAGENUM, ($this->_curPage-1)*self::PERPAGENUM
);
//實例化分頁類，並傳到前端
$this->view->pagebar = $this->displayPageBar($rows);
}
private function displayPageBar($totalRows)
{
$Pager = new Zend_Pagination($totalRows,self::PERPAGENUM);
return $Pager->getNavigation();
}
models/Blog.php，寫入如下代碼:
復制代碼 代碼如下:
public function getBlogInfo($perPageNum = NULL, $limit = NULL)
{
return $this->fetchAll('1 = 1', 'blog_id desc', $perPageNum, $limit)
->toArray();
}
public function getTotalRows($where = '1=1')
{
return $this->fetchAll($where)->count();
}
index.phtml, 寫入如下代碼:
復制代碼 代碼如下:
<div class="page">
<!--?php echo $this--->pagebar; ?>
</div>
到這裡，就可以看見效果了， 如想追求更好的頁面效果， 請根據個人喜好修改分頁類，這裡就不作詳細示例
復制代碼 代碼如下:
class Zend_Pagination
{
private $_navigationItemCount = 6; //導航欄顯示導航總頁數
private $_pageSize = null; //每頁項目數
private $_align = "right"; //導航欄顯示位置
private $_itemCount = null; //總項目數
private $_pageCount = null; //總頁數
private $_currentPage = null; //當前頁
private $_front = null; //前端控制器
private $_PageParaName = "page"; //頁面參數名稱
private $_firstPageString = "|<<"; //導航欄中第一頁顯示的字符
private $_nextPageString = ">>"; //導航欄中前一頁顯示的字符
private $_previousPageString = "<<"; //導航欄中後一頁顯示的字符
private $_lastPageString = ">>|"; //導航欄中最後一頁顯示的字符
private $_splitString = " | "; //頁數字間的間隔符
public function __construct($itemCount, $pageSize)
{
if (!is_numeric($itemCount) || (!is_numeric($pageSize))) {
throw new Exception("Pagination Error:not Number");
}
$this->_itemCount = $itemCount;
$this->_pageSize = $pageSize;
$this->_front = Zend_Controller_Front::getInstance();
$this->_pageCount = ceil($itemCount/$pageSize); //總頁數
$page = $this->_front->getRequest()->getParam($this->_PageParaName);
if (empty($page) || (!is_numeric($page))) {
//為空或不是數字，設置當前頁為1
$this->_currentPage = 1;
} else {
if ($page < 1) {
$page = 1;
}
if ($page > $this->_pageCount) {
$page = $this->_pageCount;
}
$this->_currentPage = $page;
}
}
public function getCurrentPage()
{
return $this->_currentPage;
}
public function getNavigation()
{
$navigation = '<div style="text-align:'.$this->_align.';" class="pagecss">';
//當前頁處於第幾欄分頁
$pageCote = ceil($this->_currentPage / ($this->_navigationItemCount - 1)) - 1;
//總分頁欄
$pageCoteCount = ceil($this->_pageCount / ($this->_navigationItemCount - 1));
//分頁欄中起始頁
$pageStart = $pageCote * ($this->_navigationItemCount -1) + 1;
//分頁欄中終止頁
$pageEnd = $pageStart + $this->_navigationItemCount - 1;
if($this->_pageCount < $pageEnd) {
$pageEnd = $this->_pageCount;
}
$navigation .= "總共： {$this->_itemCount} 條 共 {$this->_pageCount} 頁\n ";
if($pageCote > 0) { //首頁導航
$navigation .= '<a href="'.$this->createHref(1)
." \"="">$this->_firstPageString</a> ";
}
if($this->_currentPage != 1) { //上一頁導航
$navigation .= '<a href="'.$this->createHref($this->_currentPage-1);
$navigation .= " \"="">$this->_previousPageString</a> ";
}else{
$navigation .= $this->_previousPageString . ' ';
}
while ($pageStart <= $pageEnd) //構造數字導航區
{
if ($pageStart == $this->_currentPage) {
$navigation .= "<b>$pageStart</b>" . $this->_splitString;
} else {
$navigation .= '<a href="'.$this->createHref($pageStart)
." \"="">$pageStart</a>"
. $this->_splitString;
}
$pageStart++;
}
if($this->_currentPage != $this->_pageCount) { //下一頁導航
$navigation .= ' <a href="'
. $this->createHref($this->_currentPage+1)
. " \"="">$this->_nextPageString</a> ";
}else{
$navigation .= $this->_nextPageString;
}
if ($pageCote < $pageCoteCount-1) { //未頁導航
$navigation .= '<a href="'
. $this->createHref($this->_pageCount)
. " \"="">$this->_lastPageString</a> ";
}
$navigation .= ' 到 <select onchange="window.location=\' '
. $this->createHref()
. '\'+this.options[this.selectedIndex].value;">';
for ($i=1;$i<=$this->_pageCount;$i++){
if ($this->getCurrentPage()==$i){
$selected = "selected";
} else {
$selected = "";
}
$navigation .= '<option value=" . $i . " '="" .="" $selected="">'
. $i
. '</option>';
}
$navigation .= '</select>';
$navigation .= " 頁</div>";
return $navigation;
}
public function getNavigationItemCount()
{
return $this->_navigationItemCount;
}
public function setNavigationItemCoun($navigationCount)
{
if(is_numeric($navigationCount)) {
$this->_navigationItemCount = $navigationCount;
}
}
public function setFirstPageString($firstPageString)
{
$this->_firstPageString = $firstPageString;
}
public function setPreviousPageString($previousPageString)
{
$this->_previousPageString = $previousPageString;
}
public function setNextPageString($nextPageString)
{
$this->_nextPageString = $nextPageString;
}
public function setLastPageString($lastPageString)
{
$this->_lastPageString = $lastPageString;
}
public function setAlign($align)
{
$align = strtolower($align);
if ($align == "center") {
$this->_align = "center";
} elseif ($align == "right") {
$this->_align = "right";
} else {
$this->_align = "left";
}
}
public function setPageParamName($pageParamName)
{
$this->_PageParaName = $pageParamName;
}
public function getPageParamName()
{
return $this->_PageParaName;
}
private function createHref($targetPage = null)
{
$params = $this->_front->getRequest()->getParams();
$module = $params["module"];
$controller = $params["controller"];
$action = $params["action"];
$targetUrl = $this->_front->getBaseUrl()
. "/$module/$controller/$action";
foreach ($params as $key => $value)
{
if($key != "controller" && $key != "module"
&& $key != "action" && $key != $this->_PageParaName) {
$targetUrl .= "/$key/$value";
}
}
if (isset($targetPage)) { //指定目標頁
$targetUrl .= "/$this->_PageParaName/$targetPage";
} else {
$targetUrl .= "/$this->_PageParaName/";
}
return $targetUrl;
}
}
這裡再簡單回顧下 Mysql 中的 limit offset
假設數據庫表 blog 存在 13 條數據。
語句1：select * from blog limit 9, 4
語句2：select * from blog limit 4 offset 9
//語句1和2均返回表 blog 的第 10、11、12、13 行
//語句1中的 9 表示從表的第十行開始， 返回 4 行
//語句2中的 4 表示返回 4 行，offset 9 表示從表的第十行開始
如下語句顯示分頁效果:
語句3：select * from blog limit ($this->_curPage - 1)* self::PERPAGENUM, self::PERPAGENUM;
語句4：select * from blog limit self::PERPAGENUM offset ($this->_curPage - 1) * self::PERPAGENUM;
