PHP实现适用于文件内容操作的分页类

本文实例为大家分享了PHP实现文件内容操作的分页类，强调一下只针对文件的操作，供大家

本文实例为大家分享了PHP实现文件内容操作的分页类，强调一下只针对文件的操作，供大家参考，具体内容如下

<?php 
class StrPage {
 private $current; //当前页 
 private $file; //操作文件
 private $totalPage; //总的页数
 private $url; //传递的参数
 private $pageLen; //每页显示的长度
 
 function __construct( $file,$len = 200 ){
 $this->file = file_get_contents($file);
 $this->pageLen = $len;
 $this->current = isset($_GET['page'])?$_GET['page']:1;
 $this->totalPage = $this->getTotalPage();
 $this->url = $this->getUrl();
 }
 
 
 //获取到这个文件总的长度
 private function getTotalPage(){
 return ceil(strlen($this->file)/$this->pageLen);
 }
 
 //获取当前传递的参数,保留参数，page参数动态变化
 private function getUrl(){
 $url =parse_url($_SERVER['REQUEST_URI']);
 parse_str($url['query'],$queryArr);
 unset($queryArr['page']);
 $queryStr = http_build_query($queryArr);
 return $url['path'].'?'.$queryStr.'&page='; 
 }
 
 
 //首页
 private function first(){
 if($this->current>1)
 return "<a href='".$this->url."1'>首页</a>";
 }
 //上一页
 private function pre(){
 if( $this->current > 1 )
 return "<a href='".$this->url.($this->current-1)."'>上一页</a>";
 }
 //下一页
 private function next(){
 if( $this->current < $this->totalPage)
 return "<a href='".$this->url.($this->current+1)."'>下一页</a>";
 }
 //最后一页
 private function end(){
 if( $this->current < $this->totalPage )
 return "<a href='".$this->url.$this->totalPage."'>末页</a>";
 }
 
 public function pageList(){
 $pageListStr = '';
 for ($i=1;$i<=$this->totalPage;$i++){
 if($i==$this->current){
 $pageListStr.="<span style='font-size:20px;color:#f00'>".$i."</span> ";
 }else{
 $pageListStr.="<a href='".$this->url.$i."'>".$i." </a>";
 }
 }
 return $pageListStr;
 }
 
 public function pageStyle($style=1){
 switch ($style){
 case 1:
 return "共有".$this->totalPage."页".$this->first().$this->pre().$this->pageList().$this->next().$this->end();
 break;
 case 2;
 return $this->pageList();
 break;
 }
 }
 
 public function getContents(){
 $prePageLen = strlen($this->subStrs($this->current-1));
 $currentPageLen = strlen($this->subStrs($this->current));
 return substr($this->file, $prePageLen,$currentPageLen-$prePageLen);
 }
 
 public function subStrs($page){ 
 $string = '';
 $len= $page*$this->pageLen;
 for( $i=0; $i<$len; $i++ ){
 if( ord(substr($this->file,$i,1))>0xa0 ){
 $string .= substr($this->file,$i,3);
 $i = $i+2;
 }else{
 $string .= substr($this->file, $i,1);
 }
 }
 return $string;
 
 }
 
}

精彩专题分享：php分页功能操作

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PHP文件操作分页类 PHP分页类 PHP分页