PHP function to generate a list of page turning links (page numbers)-PHP Tutorial-php.cn

PHP function to generate a list of page turning links (page numbers)

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Release： 2016-07-25 09:00:37

Original

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/**
* Generate page number list
*
* @param int $element_total_count Total number of elements
* @param int $current_page Current page
* @param int $per_page_elem_count Number of elements per page
* @param int $show_page_num Number of page numbers displayed in the list
* @param string $up_down_class Page up and down style
* @param string $num_class Number style of the current page number
* @param string $href Page link
* @param string $page_symbol Link parameter passing the page number
* @return string
*/
function get_page_link_list($element_total_count,$current_page=1,$per_page_elem_count=10,$show_page_num=10,$up_down_class,$num_class,$href,$page_symbol='p')
{
if(empty($href))
{
//自动取得剔除页码参数的页面链接
$page_name = basename($_SERVER['PHP_SELF']);
$params = $_SERVER['QUERY_STRING'];
$params_str = '';
if(!empty($params))
{
$params = str_replace('&', '&', $params);
$params_array = explode('&', $params);
foreach($params_array as $param)
{
if(!empty($param))
{
$index = strpos($param, '=');
if($index)
{
$key = substr($param, 0, $index);
if($key && $key != $page_symbol)
$params_str .= $param . '&';
}
}
}
}
if(!empty($params_str))
$href = $page_name . '?' . $params_str;
else
$href = $page_name;
$href = rtrim($href,'&');
}
$prefix = strpos($href,"?") ? "&" : "?";
$prefix .= $page_symbol;
$page_total_count = ceil($element_total_count/$per_page_elem_count);
if(intval($element_total_count)< 1 || !isset($element_total_count))
{
return '';
}
if($element_total_count <= $per_page_elem_count)
return '';
if($current_page>$page_total_count)
$current_page = 1;
if(strpos($href,"#"))
{
$label = substr($href,strpos($href,"#"));
$href = substr($href,0,strpos($href,"#"));
}
/* 生成页码 */
if($current_page > ceil($show_page_num/2))
{
$start = $current_page - ceil($show_page_num/2);
$end = (($current_page+ceil($show_page_num/2))<$page_total_count) ?
$current_page+ceil($show_page_num/2)-1 : $page_total_count;
}
else
{
$start = 1;
$end = ($show_page_num>$page_total_count) ? $page_total_count : $show_page_num;
}
if(!empty($num_class))
$num_class_str = ' class="'.$num_class.'"';
else
$num_class_str = '';
$page_num_string = '';
for($i=$start;$i<=$end;$i++)
{
if(intval($i) == intval($current_page))
$page_num_string .= ''.$i.'';
else
$page_num_string .= ''.$i.'';
}
/* 上下翻页 */
$prev_page = (intval($current_page-1)>0)?intval($current_page-1):0;
$next_page = (intval($current_page)<$page_total_count) ? intval($current_page+1) : 0;
if(!empty($up_down_class))
$up_down_class_str = ' class="'.$up_down_class.'"';
else
$up_down_class_str = '';
$page_up_string = '';
if(intval($prev_page) > 0)
$page_up_string = '上一页';
else
$page_up_string = '上一页';
$page_down_string = '';
if(intval($next_page) > 0)
$page_down_string .= '下一页';
else
$page_down_string .= '下一页';
/* 返回结果 */
return $page_up_string . $page_num_string . $page_down_string;
}
?>