PHP简易分页代码实现
PHP简易分页代码实现
/**<br /> * @todo 分页<br /> * @param $count 总条数<br /> * @param $pagesize 每页显示条数<br /> * @param $nowpagenum 当前页码<br /> * @return String HTML <br /> * @example<br /> * $count = 45; //数据库查询到的数据总数<br /> $pagesize = 10; //每页展示的条数<br /> $nowpagenum = isset($_REQUEST['page']) ? $_REQUEST['page'] : 1 ; //获取当前的页码,默认没有的时候为1<br /> $page = $this->PageNum($count, $pagesize ,$nowpagenum);<br /> * <br /> */<br /> public function PageNum($count , $pagesize ,$nowpagenum){<br /> //计算页码<br /> $pagenum = ceil(($count/$pagesize));<br /> /***设定当前页在第一页当时无GET页码时默认为1***/<br /> $nowpagenum = empty($nowpagenum) ? 1 : $nowpagenum;<br /> /*****解析URL******/<br /> $url = $_SERVER['REQUEST_URI'];<br /> $urlArr = explode('?', $url);<br /> if(count($urlArr)==1){<br /> $newurl = $url.'?page=';<br /> }else{<br /> $params = array();<br /> $newurl = '';<br /> $newParams = array();<br /> $paramsArr = explode('&', $urlArr[1]);<br /> if(count($paramsArr)==1){<br /> $getParams = explode('=', $paramsArr[0]);<br /> $params[$getParams[0]] = $getParams[1];<br /> $newurl = $urlArr[0].'?page=';<br /> }else{<br /> for($j=0;$j<count($paramsArr);$j++){<br /> $getParams = explode('=', $paramsArr[$j]);<br /> $params[$getParams[0]] = $getParams[1];<br /> }<br /> if(isset($params['page'])){<br /> unset($params['page']);<br /> foreach($params as $key=>$value){<br /> $newParams[] = $key.'='.$value;<br /> }<br /> $newurl = $urlArr[0].'?'.implode('&', $newParams).'&page=';<br /> }else{<br /> foreach($params as $key=>$value){<br /> $newParams[] = $key.'='.$value;<br /> }<br /> $newurl = $urlArr[0].'?'.implode('&', $newParams).'&page=';<br /> }<br /> }<br /> }<br /> /****拼装页码显示HTML代码****/<br /> $html='';<br /> if(isset($count) && isset($pagesize)){<br /> //one page <br /> if($count <= $pagesize){<br /> $html = '<span>上一页</span><span>1</span><span>下一页</span>';<br /> //no record<br /> }else if($count == 0){<br /> $html = '暂未记录!';<br /> //大于一页小于等于6页<br /> }else if($count > $pagesize && $pagenum <= 6){<br /> if($nowpagenum==1){<br /> $html .= '<span>上一页</span>'; <br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.($nowpagenum-1).'">上一页</a></span>'; <br /> }<br /> for($i=1;$i<=$pagenum;$i++){<br /> if($i==$nowpagenum){<br /> $html .= '<span>'.$i.'</span>';<br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.$i.'">'.$i.'</a></span>';<br /> }<br /> }<br /> if($nowpagenum==$pagenum){<br /> $html .= '<span>下一页</span>'; <br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.($nowpagenum+1).'">下一页</a></span>'; <br /> }<br /> }else{<br /> if($nowpagenum==1){<br /> $html .= '<span>上一页</span>'; <br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.($nowpagenum-1).'">上一页</a></span>'; <br /> }<br /> if(($pagenum-$nowpagenum)>5){<br /> if($nowpagenum<=3){<br /> for($i=1;$i<=3;$i++){<br /> if($i==$nowpagenum){<br /> $html .= '<span>'.$i.'</span>';<br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.$i.'">'.$i.'</a></span>';<br /> }<br /> }<br /> }else{<br /> for($i=$nowpagenum-2;$i<=$nowpagenum;$i++){<br /> if($i==$nowpagenum){<br /> $html .= '<span>'.$i.'</span>';<br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.$i.'">'.$i.'</a></span>';<br /> }<br /> }<br /> }<br /> $html .= '<span>...</span>';<br /> for($j=$pagenum-2;$j<=$pagenum;$j++){<br /> if($j==$nowpagenum){<br /> $html .= '<span>'.$j.'</span>';<br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.$j.'">'.$j.'</a></span>';<br /> }<br /> }<br /> }else{<br /> for($i=$pagenum-5;$i<=$pagenum;$i++){<br /> if($i==$nowpagenum){<br /> $html .= '<span>'.$i.'</span>';<br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.$i.'">'.$i.'</a></span>';<br /> }<br /> }<br /> }<br /> if($nowpagenum==$pagenum){<br /> $html .= '<span>下一页</span>'; <br /> }else{<br /> $html .= '<span><a href="'.$newurl.''.($nowpagenum+1).'">下一页</a></span>'; <br /> }<br /> }<br /> }<br /> return $html;<br /> }

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