PHP实现内容页面的上一篇下一篇的功能的代码,$previous 为上一篇的id,$next_item 为下一篇的id。
$id_array = array();//获取该分类按指定排序得到的内容id数组 //获取上一篇,下一篇的id if (is_array($id_array)) { reset ($id_array); $counter = 0; foreach ($id_array as $key => $value) { if ($value == (int)$_GET['products_id']) { $position = $counter; if ($key == 0) { $previous = -1; // it was the first to be found } else { $previous = $id_array[$key - 1]; } if (isset($id_array[$key + 1]) && $id_array[$key + 1]) { $next_item = $id_array[$key + 1]; } else { $next_item = $id_array[0]; } } $last = $value; $counter++; } if ($previous == -1) $previous = $last; }