fleaphp常用方法分页之Pager使用方法_PHP

/** 
* 构造函数 
* 
* 如果 $source 参数是一个 TableDataGateway 对象，则 FLEA_Helper_Pager 会调用 
* 该 TDG 对象的 findCount() 和 findAll() 来确定记录总数并返回记录集。 
* 
* 如果 $source 参数是一个字符串，则假定为 SQL 语句。这时，FLEA_Helper_Pager 
* 不会自动调用计算各项分页参数。必须通过 setCount() 方法来设置作为分页计算 
* 基础的记录总数。 
* 
* 同时，如果 $source 参数为一个字符串，则不需要 $conditions 和 $sortby 参数。 
* 而且可以通过 setDBO() 方法设置要使用的数据库访问对象。否则 FLEA_Helper_Pager 
* 将尝试获取一个默认的数据库访问对象。 
* 
* @param TableDataGateway|string $source 
* @param int $currentPage 
* @param int $pageSize 
* @param mixed $conditions 
* @param string $sortby 
* @param int $basePageIndex 
* 
* @return FLEA_Helper_Pager 
*/ 
function FLEA_Helper_Pager(& $source, $currentPage, $pageSize = 20, $conditions = null, $sortby = null, $basePageIndex = 0) 
{ 
$this->_basePageIndex = $basePageIndex; 
$this->_currentPage = $this->currentPage = $currentPage; 
$this->pageSize = $pageSize; 
if (is_object($source)) { 
$this->source =& $source; 
$this->_conditions = $conditions; 
$this->_sortby = $sortby; 
$this->totalCount = $this->count = (int)$this->source->findCount($conditions); 
$this->computingPage(); 
} elseif (!empty($source)) { 
$this->source = $source; 
$sql = "SELECT COUNT(*) FROM ( $source ) as _count_table"; 
$this->dbo =& FLEA::getDBO(); 
$this->totalCount = $this->count = (int)$this->dbo->getOne($sql); 
$this->computingPage(); 
} 
} 
 
Pager 参数说明 
$source 数据库操作类 
$currentPage 当前页 
$pageSize 每页显示记录数量 
$conditions 查询条件 
$sortby 排序方式 
$basePageIndex 页码基数 
Pager 使用示例（实例） 
 代码如下:

$dirname = dirname(__FILE__); 
define('APP_DIR', $dirname . '/APP'); 
define('NO_LEGACY_FLEAPHP', true); 
require($dirname.'/FleaPHP/FLEA/FLEA.php'); 
//设置缓存目录 
FLEA::setAppInf('internalCacheDir',$dirname.'/_Cache'); 
//链接数据库 
$dsn = array( 
'driver' => 'mysql', 
'host' => 'localhost', 
'login' => 'root', 
'password' => '', 
'database' => 'wordpress' 
); 
FLEA::setAppInf('dbDSN',$dsn); 
//读取wp_posts的内容 
FLEA::loadClass('FLEA_Db_TableDataGateway'); 
FLEA::loadClass('FLEA_Helper_Pager'); 
//FLEA::loadHelper('pager'); 
class Teble_Class extends FLEA_Db_TableDataGateway { 
var $tableName = 'wp_posts'; 
var $primaryKey = 'ID'; 
} 
$tableposts =& new Teble_Class(); 
$pager =& new FLEA_Helper_Pager($tableposts,2,5); 
$page = $pager->getPagerData(); 
print_r($page); 
 
getPagerData 返回一些数据供调用 
 代码如下:

$data = array( 
'pageSize' => $this->pageSize, 
'totalCount' => $this->totalCount, 
'count' => $this->count, 
'pageCount' => $this->pageCount, 
'firstPage' => $this->firstPage, 
'firstPageNumber' => $this->firstPageNumber, 
'lastPage' => $this->lastPage, 
'lastPageNumber' => $this->lastPageNumber, 
'prevPage' => $this->prevPage, 
'prevPageNumber' => $this->prevPageNumber, 
'nextPage' => $this->nextPage, 
'nextPageNumber' => $this->nextPageNumber, 
'currentPage' => $this->currentPage, 
'currentPageNumber' => $this->currentPageNumber, 
);