PHP paging example code (can be modified and used directly)

When learning PHP, you will definitely encounter problems with operating MYSQL database, and pagination of the data in the database. Here is a small example to learn about PHP pagination. method.

There are many ways to paginate in PHP. Today we will use a small example to demonstrate this function.

The code is as follows:

$result = "<div class=\"page-num\"><ul class=\"fn-clear\">";

    // 上一页
    if ($offset>0) {
        $result .= "<li>
            <a href=\"".$url.&#39;offset=&#39;.($offset-$maxrow)."\">Prev</a>
        </li>";
    }

    $pages = $allPageNums;  //总页数
    $page = $curPage;    //当前页数
    $page_len = 9;
    $page_len = ($page_len%2)?$page_len:$pagelen+1;//页码个数 
    $pageoffset = ($page_len-1)/2;//页码个数左右偏移量 
    if($pages>$page_len){ 
        //如果当前页小于等于左偏移 
        if($page<=$pageoffset){ 
            $init=1; 
            $max_p = $page_len; 
        }else{//如果当前页大于左偏移 
            //如果当前页码右偏移超出最大分页数 
            if($page+$pageoffset>=$pages+1){ 
                $init = $pages-$page_len+1;
　　　　　　　　　$max_p = $pages; 
            }else{ 
                //左右偏移都存在时的计算 
                $init = $page-$pageoffset; 
                $max_p = $page+$pageoffset; 
            } 
        } 
    } else {
　　
　　　　　　$init = 1;
　　　　　　$max_p = $pages;
　　}
    for($i=$init; $i<=$max_p; $i++) {

        if ( $i == $curPage ) {
            $result .=    "<li class=\"on\"><a href=\"".$url.&#39;offset=&#39;.($i*$maxrow)."\" >$i</a></li>";
            continue;
        }

        $result .=    "<li><a href=\"".$url.&#39;offset=&#39;.(($i-1)*$maxrow)."\">$i</a></li>";

    }

    // 打印下一页
    if ( $allnums > ($offset+$maxrow) ) {
        $result .=    "<li>
            <a href=\"".$url.&#39;offset=&#39;.($offset+$maxrow)."\">Next</a>
        </li>";
    }

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