Home  >  Article  >  Backend Development  >  PHP function example that imitates Google paging effect

PHP function example that imitates Google paging effect

*文
*文Original
2017-12-28 15:48:101230browse

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
  $body=&#39;&#39;;$prefix=&#39;&#39;;$subfix=&#39;&#39;;
  $start=$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){
       $body.=&#39;<b>&#39;.$i.&#39;</b>&#39;;
     }else{
       $body.=&#39;<a href="&#39;.str_replace(&#39;{page}&#39;,$i,$url).&#39;"> &#39;.$i.&#39; </a>&#39;;
     }
  }
  $prefix=($curpage==1?&#39;&#39;:&#39;<a href="&#39;.str_replace(&#39;{page}&#39;,1,$url).&#39;">&#39;.$first.&#39;</a><a href="&#39;.str_replace(&#39;{page}&#39;,$curpage-1,$url).&#39;">&#39;.$pre.&#39;</a>&#39;);
  $subfix=($curpage==$pages?&#39;&#39;:&#39;<a href="&#39;.str_replace(&#39;{page}&#39;,$curpage+1,$url).&#39;">&#39;.$next.&#39;</a><a href="&#39;.str_replace(&#39;{page}&#39;,$pages,$url).&#39;">&#39;.$last.&#39;</a>&#39;);
  $info=" 第{$curpage}/{$pages}页 ";
  $go=&#39;<script>function ekup(){if(event.keyCode==13){clkyup();}}function clkyup(){if(!/\d+/.test(document.getElementById(\&#39;gsd09fhas9d\&#39;).value)){alert(\&#39;请输入页码!\&#39;);return;};location=\&#39;&#39;.$url.&#39;\&#39;.replace(/\\{page\\}/,document.getElementById(\&#39;gsd09fhas9d\&#39;).value);}</script><input onkeyup="ekup()" type="text" id="gsd09fhas9d" style="width:40px;vertical-align:text-baseline;padding:0 2px;font-size:10px;border:1px solid gray;"/> <span id="gsd09fhas9daa" onclick="clkyup();" style="cursor:pointer;text-decoration:underline;">转到</span>&#39;;
  return $prefix.$body.$subfix.$info.$go;
}
/**
 * 说明:获取 _SERVER[&#39;REQUEST_URI&#39;] 值的通用解决方案
 */
function request_uri()
{
  if (isset($_SERVER[&#39;REQUEST_URI&#39;]))
  {
    $uri = $_SERVER[&#39;REQUEST_URI&#39;];
  }
  else
  {
    if (isset($_SERVER[&#39;argv&#39;]))
    {
      $uri = $_SERVER[&#39;PHP_SELF&#39;] .&#39;?&#39;. $_SERVER[&#39;argv&#39;][0];
    }
    else
    {
      $uri = $_SERVER[&#39;PHP_SELF&#39;] .&#39;?&#39;. $_SERVER[&#39;QUERY_STRING&#39;];
    }
  }
  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;
     }
   }
}

相关推荐:

PHP 分页(limit)

php 分页原理详解

Wordpress php 分页代码_PHP教程

The above is the detailed content of PHP function example that imitates Google paging effect. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn