PHP功能强大的分页程序
分页类代码 page.Class.php
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <?php /** *-------------------------ҳ----------------------* */ class PageClass { private $myde_count; // 总记录数 var $myde_size; // 每页记录数 private $myde_page; // 当前页 private $myde_page_count; // 总页数 private $page_url; // 页面url private $page_i; // 起始页 private $page_ub; // 结束页 var $page_limit; // 构造函数 function __construct($myde_count=0, $myde_size=1, $myde_page=1,$page_url) { $this -> myde_count = $this -> numeric($myde_count); $this -> myde_size = $this -> numeric($myde_size); $this -> myde_page = $this -> numeric($myde_page); $this -> page_limit = ($this -> myde_page * $this -> myde_size) - $this -> myde_size; $this -> page_url = $page_url; if($this -> myde_page < 1) $this -> myde_page =1; if($this -> myde_count < 0) $this -> myde_page =0; $this -> myde_page_count = ceil($this -> myde_count/$this -> myde_size); if($this -> myde_page_count < 1) $this -> myde_page_count = 1; if($this -> myde_page > $this -> myde_page_count) $this -> myde_page = $this -> myde_page_count; $this -> page_i = $this -> myde_page - 2; $this -> page_ub = $this -> myde_page + 2; if($this -> page_i < 1){ $this -> page_ub = $this -> page_ub + (1 - $this -> page_i); $this -> page_i = 1; } if($this -> page_ub > $this -> myde_page_count){ $this -> page_i = $this -> page_i - ($this -> page_ub - $this -> myde_page_count); $this -> page_ub = $this -> myde_page_count; if($this -> page_i < 1) $this -> page_i = 1; } } // 判断是否为数字 private function numeric($id) { if (strlen($id)){ if (!ereg("^[0-9]+$",$id)){ $id = 1; }else{ $id = substr($id,0,11); } }else{ $id = 1; } return $id; } // 地址替换 private function page_replace($page) { return str_replace("{page}", $page, $this -> page_url); } // 首页 private function myde_home() { if($this -> myde_page != 1){ return " <li class=\"page_a\"><a href=\"".$this -> page_replace(1)."\" title=\"首页\" >首页</a></li>\n"; }else{ return " <li>首页</li>\n"; } } private function myde_prev() // 上一页 { if($this -> myde_page != 1){ return " <li class=\"page_a\"><a href=\"".$this -> page_replace($this->myde_page-1) ."\" title=\"上一页\" >上一页</a></li>\n"; }else{ return " <li>上一页</li>\n"; } } private function myde_next() // 下一页 { if($this -> myde_page != $this -> myde_page_count){ return " <li class=\"page_a\"><a href=\"".$this -> page_replace($this->myde_page+1) ."\" title=\"下一页\" >下一页</a></li>\n"; }else{ return " <li>下一页</li>\n"; } } private function myde_last() // 尾页 { if($this -> myde_page != $this -> myde_page_count){ return " <li class=\"page_a\"><a href=\"".$this -> page_replace($this -> myde_page_count)."\" title=\"尾页\" >尾页</a></li>\n"; }else{ return " <li>尾页</li>\n"; } } function myde_write($id='page') // 输出 { $str = "<div id=\"".$id."\" class=\"pages\">\n vul>\n "; $str .= " <li>总记录：<span>".$this -> myde_count."</span></li>\n"; $str .= " <li><span>".$this -> myde_page."</span>/<span>".$this -> myde_page_count."</span></li>\n"; $str .= $this -> myde_home(); $str .= $this -> myde_prev(); for($page_for_i = $this -> page_i;$page_for_i <= $this -> page_ub; $page_for_i++){ if($this -> myde_page == $page_for_i){ $str .= " <li class=\"on\">".$page_for_i."</li>\n"; } else{ $str .= " <li class=\"page_a\"><a href=\"".$this -> page_replace($page_for_i)."\" title=\"第".$page_for_i."页\">"; $str .= $page_for_i . "</a></li>\n"; } } $str .= $this -> myde_next(); $str .= $this -> myde_last(); $str .= " <li class=\"pages_input\"><input type=\"text\" value=\"".$this -> myde_page."\""; $str .= " onkeydown=\"javascript: if(event.keyCode==13){ location='"; $str .= $this -> page_replace("'+this.value+'")."';return false;}\""; $str .= " title=\"输入您想要到达的页码\" /></li>\n"; $str .= " </ul>\n <iv class=\"page_clear\"></div>\n</div>"; return $str; } } /*-------------------------实例--------------------------------* $page = new PageClass(1000,5,$_GET['page'],'?page={page}');//用于动态 $page = new PageClass(1000,5,$_GET['page'],'list-{page}.html');//用于静态或者伪静态 $page -> myde_write();//显示 */ ?> <?php /** *-------------------------数据库操作类-----------------------------* */ class mySql_Class { function __construct($host, $user, $pass) { @mysql_connect($host,$user,$pass) or die("数据库连接失败!"); mysql_query("SET NAMES 'utf-8'"); } function select_db($db)//连接表 { return @mysql_select_db($db); } function query($sql)//执行SQL语句 { return @mysql_query($sql); } function fetch_array($fetch_array) { return @mysql_fetch_array($fetch_array, MYSQL_ASSOC); } function num_rows($sql) { return @mysql_num_rows($sql); } } ?> 前端页面调用
<?php include '../library/page.Class.php'; $page = $_GET['page']; ?> <?php include '../library/conn.php'; $count = $mysql -> num_rows($mysql -> query("select * from article where article_category = 'php' ")); $pages = new PageClass($count,25,$_GET['page'],$_SERVER['PHP_SELF'].'?page={page}'); $sql = "select * from article where article_category = 'php' order by "; $sql .= "article_date desc limit ".$pages -> page_limit.",".$pages -> myde_size; $result = $mysql -> query($sql); ?> <table class="table"> <?php while($myrow = $mysql -> fetch_array($result)){ ?> <tr> <td width="30"><img src="../images/topicnew.gif" /></td> <td width="90" style="font-family:Georgia"><? echo $myrow["article_date"] ?></td> <td width="480"><a href="../<? echo $myrow["article_category"] ?>/<? echo $myrow["article_filename"] ?>"><? echo $myrow["article_title"] ?></a></td> </tr> <?php } ?> </table> <?php echo $pages -> myde_write(); ?>
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