万能的php分页类
2018-09-07 14:25
本文实例为大家分享了php分页类的具体代码,供大家参考,具体内容如下
<?php /*核心:首页、上一页、下一页、尾页的url*/ /*超全局$_SERVER*/ $page = new Page(5,60); var_dump($page->allUrl()); class Page{ // 每页显示的个数 protected $number; // 一共有多少数据 protected $totalCount; // 当前页 protected $page; // url protected $url; public function __construct($number,$totalCount){ $this->number= $number; $this->totalCount = $totalCount; //得到总页数 $this->totalPage = $this->getTotalPage(); //得到当前页数 $this->page = $this->getPage(); //得到URL $this->url = $this->getUrl(); echo $this->url; } /*得到总页数并向上取整*/ protected function getTotalPage(){ return ceil($this->totalCount/$this->number); } /**/ protected function getPage(){ if (empty($_GET[page])){ $page=1; }elseif ($_GET[page] > $this->totalPage){ $page = $this->totalPage; }elseif ($_GET[page]<1){ $page = 1; }else{ $page = $_GET[page]; } return $page; } protected function getUrl(){ //得到协议名 $scheme = $_SERVER[REQUEST_SCHEME]; //得到主机名 $host= $_SERVER[SERVER_NAME]; //得到端口号 $port = $_SERVER[SERVER_PORT]; //得到路径和请求字符串 $url = $_SERVER[REQUEST_URI]; /*中间做处理,要将page=5等这种字符串拼接URL 中,所以如果原来的url中有page这个参数,我们首先 需要将原来的page参数给清空*/ $urlArray = parse_url($url); // var_dump($urlArray); $path = $urlArray[path]; if (!empty($urlArray[query])){ //将query中的值转化为数组 parse_str($urlArray[query],$array); //如果他有page就将它删掉 unset($array[page]); //将关联数组转化为query $query = http_build_query($array); //不为空的话就与path连结 if ($query != ){ $path = $path.?.$query; } } return 所有的url*/ public function allUrl(){ return [ first => $this->first(), next => $this->next(), prev=> $this->prev(), end=> $this->end(), ]; } /*首页*/ public function first(){ return $this->setUrl(page=1); } /*下一页*/ public function next(){ //根据当前page得带下一页的页码 if ($this->page+1 > $this->totalPage) { $page = $this->totalPage; }else{ $page = $this->page+1; } return $this->setUrl(page=.$page); } /*上一页*/ public function prev(){ //根据当前page得带下一页的页码 if ($this->page - 1 < 1) { $page = 1; }else{ $page = $this->page-1; } return $this->setUrl(page=.$page); } /*尾页*/ public function end(){ return $this->setUrl(page=.$this->totalPage); } /*limit 0,5*/ public function limit(){ $offset = ($this->page-1)*$this->number; return $offset.,.$this->number; } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。