PHP function example that imitates Google paging effect

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Release: 2023-03-18 18:08:01
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本文主要介绍了PHP实现仿Google分页效果的分页函数,实例分析了php实现分页的相关技巧。希望对大家有所帮助。本文实例讲述了PHP实现仿Google分页效果的分页函数。分享给大家供大家参考。

具体如下:

/** * 分页函数 * @param int $total 总页数 * @param int $pagesize 每页几条 * @param string $pkey url中页面变量名称 * @param string $url 基础url,其中的{page}会被替换为页码 * 依赖函数 request_uri httpInt */ function page($total,$pagesize=10,$pkey='p',$url=null){ $a_num=10; $first=' 首页 '; $last=' 尾页 '; $pre=' 上页 '; $next=' 下页 '; $a_num=$a_num%2==0?$a_num+1:$a_num; if(!$url){ $url=preg_replace("/&?{$pkey}=[^&]{0,}/", '',request_uri()); $url=strpos($url, '?')===FALSE?$url.'?'.$pkey.'={page}':$url.'&'.$pkey.'={page}'; } $pages=ceil($total/$pagesize); $curpage=httpInt($pkey,false,1); $curpage=$curpage>$pages||$curpage<=0?1:$curpage;//当前页超范围置为1 $body='';$prefix='';$subfix=''; $start=$curpage-($a_num-1)/2;//开始页 $end=$curpage+($a_num-1)/2; //结束页 $start=$start<=0?1:$start; //开始页超范围修正 $end=$end>$pages?$pages:$end;//结束页超范围修正 if($pages>=$a_num){//总页数大于显示页数 if($curpage<=($a_num-1)/2){$end=$a_num;}//当前页在左半边补右边 if($end-$curpage<=($a_num-1)/2){$start-=5-($end-$curpage);}//当前页在右半边补左边 } for($i=$start;$i<=$end;$i++){ if($i==$curpage){ $body.=''.$i.''; }else{ $body.=' '.$i.' '; } } $prefix=($curpage==1?'':''.$first.''.$pre.''); $subfix=($curpage==$pages?'':''.$next.''.$last.''); $info=" 第{$curpage}/{$pages}页 "; $go=' 转到'; return $prefix.$body.$subfix.$info.$go; } /** * 说明:获取 _SERVER['REQUEST_URI'] 值的通用解决方案 */ function request_uri() { if (isset($_SERVER['REQUEST_URI'])) { $uri = $_SERVER['REQUEST_URI']; } else { if (isset($_SERVER['argv'])) { $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0]; } else { $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING']; } } return $uri; } /** * 获取HTTP传递的整数 * @param string $key 参数名称 * @param bool $ispost 采取POST传递方式,默认为真http://blog.ddian.cn * @return 整数,非法时默认为 $default */ function httpInt($key, $ispost=true,$default=0) { if ($ispost) { if (isset($_POST[$key])) { if (empty($_POST[$key])) { return $default; } else { $val = trim($_POST[$key]); if (preg_match("/^\-?\d+$/", $val)) return intval($val); else return $default; } } else { return $default; } } else { if (isset($_GET[$key])) { if (empty($_GET[$key])) { return $default; } else { $val = trim($_GET[$key]); if (preg_match("/^\-?\d+$/", $val)) { return intval($val); } else { return $default; } } } else { return $default; } } }
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