php通用分页类代码
php通用分页类代码 这是一款使用方法的php分页代码,我们把它总结了各种分页代码的特别,写出一款php通用分页类使用方法简单,易懂哦。
php教程通用分页类代码
这是一款使用方法的php分页代码,我们把它总结了各种分页代码的特别,写出一款php通用分页类使用方法简单,易懂哦。
*/
class dividepage{//分页类
private $total;//要显示的总记录数
private $url;//请求的url地址
private $displaypg;//每页显示的记录数,默认为每页显示10条记录
private $page;//当前页码
private $lastpg;//总页数,即最后一页的页码
private $prepg;//前一页
private $nextpg;//后一页
private $firstcount;//记录条数开始的序号从0开始
private $startd;//记录条数开始的记录号.
private $stopd;//记录条数结束的记录号.//构造函数
public function __construct($url, $total, $displaypg){
$this->url = $url;//请求的url
$this->total = $total;//总记录数
//if($displaypg == '')
$this->displaypg = $displaypg;//每页显示的记录数
$this->initdividepage();//初始化分页类
//echo ','.$this->displaypg;
}//初始化分页类
private function initdividepage(){
//分析url
$parse_url = parse_url($this->url);//将url解释为有固定键值对的数组
$url_query = $parse_url['query'];//取出url中的查询字符串
if($url_query){//如果有查询字符串,则删除查询字串中当前页的查询字段如:&page=$page或page=$page
ereg('(^|&)page=([0-9]*)', $url_query, $k);
$this->page = $k[2];//取得当前页的值
$url_query = ereg_replace("(^|&)page=$this->page", '', $url_query);//删除查询字串中当前页的查询字段如:&page=$page或page=$page
$this->url = str_replace($parse_url['query'], $url_query, $this->url);//保留其他的查询字串,
$this->page = $this->page ? $this->page : 1;//w如果查询字符串中没有当前页的值就设当前页为1
if($url_query){//如果有其他查询字符串,则以&page=$page形式添加翻页查询字串
$this->url .= '&page';
}else{//如果没有其他查询字串,则以page=$page形式添加翻页查询字串
$this->url .= 'page';
}
}else{//如果没有查询字串,则在url后添加?page=$page形式的翻页查询字串
$this->page = 1;
$this->url .= '?page';
}
$this->lastpg = ceil($this->total / $this->displaypg);//计算总页数,即最后一页的页码
$this->page = min($this->lastpg, $this->page);//如果当前页大于总页数,则当前页为最后一页的页码
$this->prepg = $this->page - 1;//上一页为当前页减一www.bKjia.c0m
$this->nextpg = $this->page + 1;//(($this->page == $this->lastpg) ? $this->lastpg : ($this->page + 1));//下一页为当前页加一,如果当前页为最后一页,则下一页为0
$this->firstcount = ($this->page - 1) * $this->displaypg;//计算当前页,记录条数开始的记录号,从0开始.
$this->startd = $this->total ? ($this->firstcount + 1) : 0;//记录开始号从1开始
$this->stopd = min($this->firstcount + $this->displaypg, $this->total);//记录结束号
//echo $this->displaypg;
//echo $this->nextpg.'+=+='.$this->lastpg;
}public function getpageinfo(){//取得当前页面的基本信息,如:显示第 1-10 条记录,共 23 条记录。
return '显示第'.$this->startd.'-'.$this->stopd.'条记录,共'.$this->total.'条记录。';
}public function getcommonpagenav(){//取得通常的分页导航,如:首页 上一页 下一页 尾页
$commonnav = '';
if($this->lastpg == 1){//如果只有一页,则返回翻页导航,退出,不显示下一页,上一页等。。。
return $commonnav;
break;
}
$commonnav = '首页';//设置首页导航,page=1
if($this->prepg){
$commonnav .= '上一页';
}else{
$commonnav .= '上一页';
}
if($this->nextpg lastpg){
$commonnav .= '下一页';
}else{
$commonnav .= '下一页';
}
$commonnav .= '尾页';//显示尾页链接
return $commonnav;
}//取得跳转分页导航,如:第n页
public function getjumppagenav(){
////取得所有的分页导航
public function getallpagenav(){
$temp = $this->getpageinfo().$this->getcommonpagenav().$this->getjumppagenav();
return $temp;
}//取得当前页需显示的记录,在数据库教程中的限定范围,如0-9
public function getlimitstr(){
//echo $this->page;
//echo $this->firstcount;
//echo $this->dispalypg;
$temp = $this->firstcount.','.$this->displaypg;
//echo $temp;
return $temp;
}}
/*
使用实例:
*$result=mysql教程_query("select * from tb_pagetest");//从数据库中查询所需显示的数据
*$total=mysql_num_rows($result);//查询到的数据的总条数
*$pagesize = 5;//每页显示的记录条数
*$url = $_server['request_uri'];//请求的uri
*
*$dividepageclass = new dividepage($url, $total, $pagesize); //创建分页类,(类能自动初始化)
*$limitstr = $dividepageclass->getlimitstr();//取得当前页要显示的记录开始序号和每页显示条数,如:0, 5(显示从0开始的5条记录)
*echo $dividepageclass->getallpagenav();//显示所有分页导航条,
*如:显示第11-13条记录,共13条记录。首页 上一页 下一页 尾页 到*第 1 页,共 3 页
*$sql = 'select * from tb_pagetest limit '.$limitstr;
*$result=mysql_query($sql);//从数据库中取得当前页要显示的记录集,然后显示就ok
*如:
*while($row=mysql_fetch_array($result))
*echo "
".$row[title]." | ".$row[author];

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