MySQL分页模型(Pagination.php)_MySQL
class Pagination {
var $pageSize; //页大小
var $pageNo; //当前页码
var $rowCount; //记录总数
var $pageCount; //总页数
var $records; //当前页记录
var $currentPageSize; //当前页记录总数
var $currentPageStartNo; //当前页开始记录号
//判断是否有电脑教程之家 http://www.pcppc.cn
function hasNextPage() {
return $this->pageNo pageCount;
}
//取得电脑教程之家 http://www.pcppc.cn页码
function getNextPageNo() {
return $this->pageNo + 1;
}
//判断是否有上一页
function hasPriorPage() {
return $this->pageNo > 1;
}
//取得上一页页码
function getPriorPageNo() {
return $this->pageNo - 1;
}
//判断是否第一页
function isFirstPage(){
return $this->pageNo == 1 || $this->pageCount==0;
}
//判断是否最后一页
function isLastPage(){
return $this->pageNo == $this->pageCount || $this->pageCount==0;
}
//装载某一页数据,成功则返回true,失败则返回false
// dataMaker是一个函数名,用于将一条记录转换为一个对象
// 有一个参数为当前记录所有字段的值(一个以数字或字段名为索引的数组)
function load($con, $sql, $dataMaker, $pageSize, $pageNo){
//页大小和当前页码必须>=1
if( $pageSize
//查询
if( $rst = @mysql_que
MySQL教程是:MySQL分页模型(Pagination.php)。ry($sql, $con) ){
$this->pageSize = $pageSize;
$this->pageNo = $pageNo;
$this->rowCount = @mysql_num_rows($rst);
$this->pageCount = (int)(($this->rowCount + $this->pageSize - 1) / $this->pageSize);
$this->records = array();
//将光标移动到指定页的第一条记录前
$this->currentPageStartNo = ($this->pageNo - 1) * $this->pageSize + 1;
$firstRowNo = $this->currentPageStartNo;
while( --$firstRowNo>0 && @mysql_fetch_array($rst) );
//取出指定页的数据
$read = 0;
$this->currentPageSize = 0;
while( $readpageSize && $row=@mysql_fetch_array($rst) ){
$this->records[$this->currentPageSize++] = $dataMaker($row);
$read++;
}
}
else{
return false;
}
return true;
}
};
?>

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