Posted in PHP onJune 21, 2017
本文实例讲述了php基于SQLite实现的分页功能。分享给大家供大家参考,具体如下:
这里操作数据库文件使用的是前面文章《PHP基于PDO实现的SQLite操作类【包含增删改查及事务等操作】》中的SQLite数据库操作类。废话不说,直接上代码:
<meta charset='utf-8'> <?php class SqlitePage{ public function __construct() { $this->table_name=''; $this->tj=''; $this->page_size=''; $this->current_page=''; $this->total_page=''; include_once 'sqlite_db.php'; $this->db=new SqliteDB();//可以调用他的操作方法了 } function entrance($table_name,$page_size,$tj='')//sql中不包含limit page_size为每页显示条数 { // 首先获取当前页 // sql = "select * from tab where "+条件+" order by "+排序+" limit "+要显示多少条记录+" offset "+跳过多少条记录; $this->page_size=$page_size; $this->table_name=$table_name; $this->tj=$tj; $this->total_page=ceil($this->db->total($this->table_name,$this->tj)/$this->page_size); if (!isset($_GET['page'])) { $this->current_page=1;//如果没有page,则设置为默认第一页 } else{ $this->current_page=$_GET['page']; } if ($this->current_page>$this->total_page) {//当当前页数目大于总页数,则设置当前页数为总页数 $this->current_page=$this->total_page; } if ($this->current_page<1) {//当当前页数目大于总页数,则设置当前页数为总页数 $this->current_page=1; } $tj=$this->tj.' limit '.$this->page_size.' offset '.($this->current_page-1)*$this->page_size; $result=$this->db->query($this->table_name,$tj); return $result; } function page_bar() { $old_url = $_SERVER["REQUEST_URI"]; $check = strpos($old_url, '?'); $pre_urls='test'; if ($check) {//如果urls中有? if(substr($old_url, $check+1) == '') { //有问号,但是后面没有跟任何参数 $first_urls=$old_url.'page=1';//首页 $pre_urls=$old_url.'page='.($this->current_page-1);//上一页; $next_urls=$old_url.'page='.($this->current_page+1);//下一页; $end_urls=$old_url.'page='.$this->total_page;//末页 } else {//有问号,并且有参数 if (isset($_GET['page'])) {//如果参数中包含page参数,则注销这个参数 unset($_GET['page']); $old_url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.http_build_query($_GET); } $first_urls=$old_url.'&page=1';//首页 $pre_urls=$old_url.'&page='.($this->current_page-1);//上一页; $next_urls=$old_url.'&page='.($this->current_page+1);//下一页; $end_urls=$old_url.'&page='.$this->total_page;//末页 } } else{// 如果没有问号(也就是说后面没有任何参数,则直接跟) $first_urls=$old_url.'?page=1'; $first_urls=$old_url.'?page=1';//首页 $pre_urls=$old_url.'?page='.($this->current_page-1);//上一页; $next_urls=$old_url.'?page='.($this->current_page+1);//下一页; $end_urls=$old_url.'?page='.$this->total_page;//末页 } // echo $this->table_name.'table_name'; return ' <div class="page"> <a>【共'.$this->total_page.'页,第'.$this->current_page.'页】</a> <a href="'.$first_urls.'" rel="external nofollow" >首页</a> <a href="'.$pre_urls.'" rel="external nofollow" >上一页</a> <a href="'.$next_urls.'" rel="external nofollow" >下一页</a> <a href="'.$end_urls.'" rel="external nofollow" >末页</a> </div> '; } public function get_total_page() { return ceil($this->total_record/$this->page_size); } } // $page=new PrePage(); // $res=$page->entrance('log',10); // echo "<hr />"; // foreach ($res as $key => $row) { // echo $row['urls'].'<br />'; // } // echo $page->page_bar(); ?>
希望本文所述对大家PHP程序设计有所帮助。
php基于SQLite实现的分页功能示例
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