php利用模板分页程序（带demo演示）；

//page.class.php

class page{

var $currentpage;
var $leftoffset;
var $rightoffset;

var $totalpage;//总页数
var $recordcount;//总记录数
var $pagesize;//每页显示条数

var $pageurl;
var $hypelink;

var $template;
var $tpl;
var $tagitems=array();
var $tagvalues=array();

var $sqlquery;

//构造函数
function page($currentpage=1,$pagesize=5,$leftoffset=2,$rightoffset=7,$pageurl="?page="){
echo "分页类开始";
$this->currentpage=ceil(abs(@$currentpage+0));
(empty($this->currentpage))?$this->currentpage=1:$this->currentpage=$this->currentpage;
$this->pagesize=ceil(abs(@$pagesize+0));
(empty($this->pagesize))?$this->pagesize=5:$this->pagesize=$this->pagesize;
$this->leftoffset=ceil(abs(@$leftoffset+0));
(empty($this->leftoffset))?$this->leftoffset=2:$this->leftoffset=$this->leftoffset;
$this->rightoffset=ceil(abs(@$rightoffset+0));
(empty($this->rightoffset))?$this->rightoffset=7:$this->rightoffset=$this->rightoffset;
$this->pageurl=$pageurl;

$this->setdefaulttagvalue();
}

//取得记录总数
//$sql="select count(id) as n from table";
function getrecordcount($sql,$conn){
$query=@mysql教程_query($sql,$conn);
if(!$query){echo "执行sql语句失败";exit();}
while($rs=mysql_fetch_row($query)){
$this->recordcount=$rs[0];//取得记录总数
}
$this->totalpage=ceil($this->recordcount / $this->pagesize);//计算总页数
if($this->currentpage > $this->totalpage){$this->currentpage=$this->totalpage;}//判断当前页是否大于总页数
mysql_free_result($query);
}

//select * from tb p->setlimit();
function setlimit(){
$limit="limit ".($this->currentpage-1)*$this->pagesize;
$limit.=",$this->pagesize";
return $limit;
}

function executesql($sql,$conn){
if(!$sql||!$conn){echo "参数传递错误";return false;}
$this->sqlquery=mysql_query($sql,$conn);
if(!$this->sqlquery){echo "执行sql语句失败";return false;}
}
function recordset(){
return mysql_fetch_array($this->sqlquery);
}

//取得模板内容
function gettemplate($filedir){
if(file_exists($filedir)){
$f=fopen($filedir,"r");
$this->template=fread($f,filesize($filedir));
}else{
echo "获取模板文件失败...文件不存在";
exit();
}
//取得区块内容
$start=strpos($this->template,"");
$end=strpos($this->template,"");
$this->tpl=substr($this->template,$start+strlen(""),$end-$start-strlen("")-2);
if($this->tpl==""){echo "模板内容为空，请检查标签设置是否正确。";exit();}
//echo $this->tpl;
}

//设定默认标签对应值
function setdefaulttagvalue(){
$this->tagitems["previouspage"]="上一页";
$this->tagitems["previouspagelink"]="";
$this->tagitems["previoustenpage"]="上十页";
$this->tagitems["previoustenpagelink"]="";
$this->tagitems["nextpage"]="下一页";
$this->tagitems["nextpagelink"]="";
$this->tagitems["nexttenpage"]="下十页";
$this->tagitems["nexttenpagelink"]="";
$this->tagitems["firstpage"]="首页";
$this->tagitems["firstpagelink"]="";
$this->tagitems["lastpage"]="尾页";
$this->tagitems["lastpagelink"]="";
$this->tagitems["listpage"]="[{list}]";
$this->tagitems["listpagelink"]="";

//定义模板标签
$this->tagvalues["previouspage"]="{previouspage}";
$this->tagvalues["previouspagelink"]="{previouspage}";
$this->tagvalues["previoustenpage"]="{previoustenpage}";
$this->tagvalues["previoustenpagelink"]="{previoustenpage}";
$this->tagvalues["nextpage"]="{nextpage}";
$this->tagvalues["nextpagelink"]="{nextpage}";
$this->tagvalues["nexttenpage"]="{nexttenpage}";
$this->tagvalues["nexttenpagelink"]="{nexttenpage}";
$this->tagvalues["firstpage"]="{firstpage}";
$this->tagvalues["firstpagelink"]="{firstpage}";
$this->tagvalues["lastpage"]="{lastpage}";
$this->tagvalues["lastpagelink"]="{lastpage}";
$this->tagvalues["listpage"]="{list}";
$this->tagvalues["listpagelink"]="{list}";
/*其他标签直接替换
{$datacount}:共{$datacount}条记录
{$currentpage}:当前为第{$currentpage}页
{$totalpage}:共{$totalpage}页
{$numperpage}:每页{$numperpage}条
*/
}
// 重新设定标签对应值
function settagvalue($item,$itemvalue="",$value=""){
if(!isset($item)||!isset($itemvalue)||!isset($value)){return;}
foreach($this->tagitems as $key=>$v){
if($key==$item){
(empty($itemvalue))?"":$this->tagitems[$key]=$itemvalue;//如果为空，则不改变
(empty($value))?"":$this->tagvalues[$key]=$value;
}
}
}

//模板解析
function prasetemplate(){
//------a_begin------//
if($this->totalpage > 1){
//------b_begin------//
if($this->currentpage > 1){
//首页
$t=str_replace("{link}",$this->pageurl."1",$this->tagitems["firstpagelink"]);
$this->tpl=str_replace($this->tagvalues["firstpagelink"],$t,$this->tpl);
//前一页
$t=str_replace("{link}",$this->pageurl.($this->currentpage-1),$this->tagitems["previouspagelink"]);
$this->tpl=str_replace($this->tagvalues["previouspagelink"],$t,$this->tpl);
//------c_begin------//
if($this->currentpage totalpage){
//下一页
$t=str_replace("{link}",$this->pageurl.($this->currentpage+1),$this->tagitems["nextpagelink"]);
$this->tpl=str_replace($this->tagvalues["nextpagelink"],$t,$this->tpl);
//尾页
$t=str_replace("{link}",$this->pageurl.$this->totalpage,$this->tagitems["lastpagelink"]);
$this->tpl=str_replace($this->tagvalues["lastpagelink"],$t,$this->tpl);
}else{
//下一页
$this->tpl=str_replace($this->tagvalues["nextpage"],$this->tagitems["nextpage"],$this->tpl);
//尾页
$this->tpl=str_replace($this->tagvalues["lastpage"],$this->tagitems["lastpage"],$this->tpl);
}
//------c_end------//
}else{
//首页
$this->tpl=str_replace($this->tagvalues["firstpage"],$this->tagitems["firstpage"],$this->tpl);
//前一页
$this->tpl=str_replace($this->tagvalues["previouspage"],$this->tagitems["previouspage"],$this->tpl);
//下一页
$t=str_replace("{link}",$this->pageurl.($this->currentpage+1),$this->tagitems["nextpagelink"]);
$this->tpl=str_replace($this->tagvalues["nextpagelink"],$t,$this->tpl);
//尾页
$t=str_replace("{link}",$this->pageurl.$this->totalpage,$this->tagitems["lastpagelink"]);
$this->tpl=str_replace($this->tagvalues["lastpagelink"],$t,$this->tpl);
}
//------b_end------//
}else{
//解析前一页，前十页,后一页，后十页,首页，尾页
$this->tpl=str_replace($this->tagvalues["previouspage"],$this->tagitems["previouspage"],$this->tpl);
$this->tpl=str_replace($this->tagvalues["previoustenpage"],$this->tagitems["previoustenpage"],$this->tpl);
$this->tpl=str_replace($this->tagvalues["nextpage"],$this->tagitems["nextpage"],$this->tpl);
$this->tpl=str_replace($this->tagvalues["nexttenpage"],$this->tagitems["nexttenpage"],$this->tpl);
$this->tpl=str_replace($this->tagvalues["firstpage"],$this->tagitems["firstpage"],$this->tpl);
$this->tpl=str_replace($this->tagvalues["lastpage"],$this->tagitems["lastpage"],$this->tpl);
}
//------a_end------//

//前十页,后十页
if($this->currentpage-10>=1){
$t=str_replace("{link}",$this->pageurl.($this->currentpage-10),$this->tagitems["previoustenpagelink"]);
$this->tpl=str_replace($this->tagvalues["previoustenpagelink"],$t,$this->tpl);
}else{
$this->tpl=str_replace($this->tagvalues["previoustenpage"],$this->tagitems["previoustenpage"],$this->tpl);
}
if($this->currentpage+10totalpage){
$t=str_replace("{link}",$this->pageurl.($this->currentpage+10),$this->tagitems["nexttenpagelink"]);
$this->tpl=str_replace($this->tagvalues["nexttenpagelink"],$t,$this->tpl);
}else{
$this->tpl=str_replace($this->tagvalues["nexttenpage"],$this->tagitems["nexttenpage"],$this->tpl);
}

//数字列表
$firstnum;
$lastnum;
$t="";
if($this->currentpage-$this->leftoffset $firstnum=1;
}else{$firstnum=$this->currentpage-$this->leftoffset;}
if($this->currentpage+$this->rightoffset>$this->totalpage){
$lastnum=$this->totalpage;
}else{$lastnum=$this->currentpage+$this->rightoffset;}
for($i=$firstnum;$i if($i==$this->currentpage){
$t.=str_replace("{list}",$i,$this->tagitems["listpage"]);
}else{
$m=str_replace("{list}",$i,$this->tagitems["listpagelink"]);
$t.=str_replace("{link}",$this->pageurl.$i,$m);
}
}
$this->tpl=str_replace($this->tagvalues["listpage"],$t,$this->tpl);
//$list=str_replace("{list}","1",$this->tagitems["listpage"]);
//$this->tpl=str_replace($this->tagvalues["listpage"],$list,$this->tpl);

//共{$datacount}条记录,当前为第{$currentpage}页,共{$totalpage}页,每页{$numperpage}条
$this->tpl=str_replace("{datacount}",$this->recordcount,$this->tpl);
$this->tpl=str_replace("{currentpage}",$this->currentpage,$this->tpl);
$this->tpl=str_replace("{totalpage}",$this->totalpage,$this->tpl);
$this->tpl=str_replace("{numperpage}",$this->pagesize,$this->tpl);
}

//输出
function output(){
return $this->tpl;
}
}

?>

//检测文件demo.php

css" rel="stylesheet" type="text/css" />

require_once("page.class.php");
$conn=mysql_connect("localhost","root","root");//连接数据库教程
mysql_select_db("pht");//打开数据库

$p=new page($_get["page"],2,2,7,"?page=");//初始化
$sql="select * from comments ".$p->setlimit();//构造select * from tb limit m,n语句
$p->executesql($sql,$conn);//执行sql
while($rs=$p->recordset()){//读出记录
echo "
".$rs["cname"]."
";
}
$sql="select count(cid) as uid from comments";//读出总记录数
$p->getrecordcount($sql,$conn);
$p->gettemplate("style.html");//获取模板内容
$p->prasetemplate();//解析模板
echo $p->output();//输出分页
?>

//分页调用模板文件