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class Page{ private $total; // 总共有多少条记录 private $pagenum; // 分成多少页 private $pagesize; // 每页多少条记录 private $current; // 当前所在的页数 private $url; // url private $first; // 首页 private $last; // 末页 private $prev; // 上一页 private $next; // 下一页 /** * 构造函数 * @access public * @param $total number 总的记录数 * @param $pagesize number 每页的记录数 * @param $current number 当前所在页 * @param $script string 当前请求的脚本名称,默认为空 * @param $params array url所携带的参数,默认为空 */ public function __construct($total,$pagesize,$current,$script = '',$params = array()){ $this->total = $total; $this->pagesize = $pagesize; $this->pagenum = $this->getNum(); $this->current = $current; //设置url $p = array(); foreach ($params as $k => $v) { $p[] = "$k=$v"; } $this->url = $script . '?' . implode('&', $p) . '&page='; $this->first = $this->getFirst(); $this->last = $this->getLast(); $this->prev = $this->getPrev(); $this->next = $this->getNext(); } private function getNum(){ return ceil($this->total / $this->pagesize); } private function getFirst(){ if ($this->current == 1) { return '[首页]'; } else { return "<a href='{$this->url}1'>[首页]<a/>"; } } private function getLast(){ if ($this->current == $this->pagenum) { return '末页'; } else { return "<a href='{$this->url}{$this->pagenum}'>[末页]</a>"; } } private function getPrev(){ if ($this->current == 1) { return '[上一页]'; } else { return "<a href='{$this->url}".($this->current - 1)."'>[上一页]</a>"; } } private function getNext(){ if ($this->current == $this->pagenum ){ return '[下一页]'; } else { return "<a href='{$this->url}".($this->current+1)."'>[下一页]</a>"; } } /** * getPage方法,得到分页信息 * @access public * @return string 分页信息字符串 */ public function showPage(){ if ($this->pagenum > 1){ return "共有 {$this->total} 条记录,每页显示 {$this->pagesize} 条记录, 当前为 {$this->current}/{$this->pagenum} {$this->first} {$this->prev} {$this->next} {$this->last}"; }else{ return "共有 {$this->total} 条记录"; } } } //使用:配合mysql操作类一起使用 /* $total = $db->total(); $pagesize = 3; $current = isset($_REQUEST['page']) ? $_REQUEST['page'] : 1; $offset = ($current - 1) * $pagesize; $rows = $db->getAll("SELECT * FROM category limit $offset,$pagesize" ); $page = new page($total,$pagesize,$current,'test.php',array('goods_id'=>2)); $str = "<table width='400' border='1'>"; $str .= "<tr><th>编号</th><th>名称</th><th>父编号</th></tr>"; foreach ($rows as $v) { $str .= '<tr>'; $str .= "<td>{$v['cat_id']}</td>"; $str .= "<td>{$v['cat_name']}</td>"; $str .= "<td>{$v['parent_id']}</td>"; $str .= '</tr>'; } $str .= "</table>"; echo $str; echo $page->showPage(); */
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