An example of simple paging code in php

Share a simple PHP paging code, suitable for reference by friends who are new to PHP.

Code:

<?php
//php分页
//by bbs.it-home.org
$result = "<div class=\"page-num\"><ul class=\"fn-clear\">";    
    // 上一页
    if ($offset>0) {
        $result .= "<li>
            Prev
        </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; 
            }else{ 
                //左右偏移都存在时的计算 
                $init = $page-$pageoffset; 
                $max_p = $page+$pageoffset; 
            } 
        } 
    } 

    for($i=$init; $i<=$max_p; $i++) {
        
        if ( $i == $curPage ) {
            $result .=    "<li class=\"on\">$i</li>";
            continue;
        }
        
        $result .=    "<li>$i</li>";
        
    }
    
    // 打印下一页
    if ( $allnums > ($offset+$maxrow) ) {
        $result .=    "<li>
            Next
        </li>";
    }
?>