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HomeDatabaseMysql Tutorial分页显示Mysql数据库记录的类_MySQL

/*********************************************
TViewPage v 1.0

分页显示Mysql数据库记录的类

作者:sharetop
E-mail:ycshowtop@21cn.com
时间:2000-8-31

本类没有提供连接数据库的功能,所以需在外部打开相应的数据库。
本类也没有提供显示记录的功能,只是分页读取记录至 Result二维数组中。
需在外部自定义数据显示格式。
***********************************************/
class TViewPage {

var $Table; //表名
var $MaxLine; //每页显示行数

var $Offset; //记录偏移量
var $Total; //记录总数
var $Number; //本页读取的记录数
var $Result; //读出的结果

var $TPages; //总页数
var $CPages; //当前页数

var $Condition; //显示条件 如:where id='$id' order by id desc
var $PageQuery; //分页显示要传递的参数


//******构造函数*************
//参数:表名、最大行数、偏移量

function TViewPage($TB,$ML,$OF=0){
$this->Table=$TB;
$this->MaxLine=$ML;
$this->Offset=$OF;
$this->Condition="";
}

//********设置显示条件*********
//如:where id='$id' order by id desc
//要求是字串,符合SQL语法(本字串将加在SQL语句后)

function SetCondition($s){
$this->Condition=$s;
}

//******设置传递参数************
// key参数名 value参数值
// 如:setpagequery("id",$id);如有多个参数要传递,可多次调用本函数。

function SetPageQuery($key,$value){
$tmp[key]=$key; $tmp[value]=$value;
$this->PageQuery[]=$tmp;
}

//********读取记录***************
// 主要工作函数,根据所给的条件从表中读取相应的记录
// 返回值是一个二维数组,Result[记录号][字段名]

function ReadList() {
$SQL="SELECT Count(*) AS total FROM ".$this->Table." ".$this->Condition;

$result=mysql_query($SQL) or die(mysql_error());
$row=mysql_fetch_Array($result);
$this->Total=$row[total];

if($this->Total>0) { //根据条件 Condition
$SQL="SELECT * FROM ".$this->Table." ".$this->Condition.
" LIMIT ".$this->Offset." , ".$this->MaxLine;

$result=mysql_query($SQL) or die(mysql_error());
$this->Number=mysql_num_rows($result);

while($row=mysql_fetch_Array($result)) $this->Result[]=$row;
}
return $this->Result;
}

//**********显示页数*************
//显示当前页及总页数

function ThePage() {
$this->TPages=ceil($this->Total/$this->MaxLine);
$this->CPages=$this->Offset/$this->MaxLine+1;
echo "第".$this->CPages."页/共".$this->TPages."页";
}

//**********显示翻页按钮*************
//此函数要在ThePage()函数之后调用!!!
//显示首页、下页、上页、未页,并加上要传递的参数

function Page() {
$first=0;
$next=$this->Offset+$this->MaxLine;
$prev=$this->Offset-$this->MaxLine;
$last=($this->TPages-1)*$this->MaxLine;

$k=count($this->PageQuery);
$strQuery=""; //生成一个要传递参数字串
for($i=0;$i<$k;$i++){
$strQuery.="&".$this->PageQuery[$i][key]."=".$this->PageQuery[$i][value];
}

if($this->Offset>=$this->MaxLine)
echo "首页|";
if($prev>=0)
echo "|";
if($this->TPages!=0 && $this->CPages<$this->TPages)
echo "末页";
}

//******end class
}

?>

 

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