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Homephp教程php手册四文章类封装对文章的各种操作插入数据库、从数据库取出等等

WHXBB(); } /** * 文章写入数据库 * @param $title 文章标题 * @param $author 文章作者 * @param $content 文章内容 * @return 操作出错:一个WHXBB_Error对象 成功:true * @access public */ function Insert($title, $author, $content) { new WHXBB_Debug("Insert() Start"); // 处理传入的参数 WHXBB::OperateString(&$title, in); WHXBB::OperateString(&$author, in); WHXBB::OperateString(&$content, in); $sql = "insert into article(title,author,content) values($title,$author,$content)"; if( !@mysql_query($sql, $this->_conn) ) { return new WHXBB_Error("Insert() Failed.($sql)", 1021); } new WHXBB_Debug("Insert() Completed"); return true; } /** * 删除指定的记录 * @param $id 要删除记录的id * @return 操作出错:一个WHXBB_Error对象 成功:true * @access public */ function Del($id) { new WHXBB_Debug("Del($id) Start"); $sql = "delete from article where id=$id)"; if( !@mysql_query($sql, $this->_conn) ) { return new WHXBB_Error("Del() Failed.($sql)", 1024); } new WHXBB_Debug("Dle($id) Completed"); return true; } /** * 得到文章的总数 * @param $condition 查询条件 * @return 操作出错:一个WHXBB_Error对象 成功:true * @access public */ function GetCount($condition = ) { new WHXBB_Debug("GetCount() Start"); $sql = "select count(id) from article where 1=1 $condition"; if( !$result = @mysql_query($sql, $this->_conn)) { return new WHXBB_Error("GetCount() Failed.($sql)", 1000); } list($count) = @mysql_fetch_array($result); @mysql_free_result($result); new WHXBB_Debug("GetCount() Completed"); return $count; } /** * 得到某一篇文章的所有字段信息 * @param $id 文章id号 * @return 操作出错:一个WHXBB_Error对象 成功:返回一个关联数组 找不到信息:返回0 * @access public */ function GetInfo($id ) { new WHXBB_Debug("GetInfo($id) Start"); $sql = "select id, title, content, author from article where id=$id"; $result = @mysql_query($sql, $this->_conn); if( !$result) return new WHXBB_Error("GetInfo($id) Failed.($sql)", 1002); if(@mysql_num_rows($result) == 0) return 0; $info = @mysql_fetch_array($result); while (list($var, $key) = each($info)) { WHXBB::OperateString(&$info[$var], out); } reset($info); @mysql_free_result($result); new WHXBB_Debug("GetInfo($id) Completed"); return $info; } /** * 得到所有author为指定作者名的所有记录 * @param $items 每页显示条数,如果为0则表示取出所有记录 * @param page 当前页码 * @param author 作者名 * @param $orderBy 排序方式 * @return 操作出错:一个WHXBB_Error对象 成功:返回一个数组 找不到信息:返回0 * @access public */ function GetNInfoByAuthor($items, $page, $author, $orderBy = order by id desc) { WHXBB::OperateString(&$author, in); $condition = " and author=$author "; $result = $this->GetNInfo($items, $page, $condition, $orderBy); return $result; } } /** * 列出所有记录 * @param $items 每页显示条数,如果为0则表示取出所有记录 * @param $page 当前页码 * @param $condition 查询条件 * @param $orderBy 排序方式 * @return 操作出错:一个WHXBB_Error对象 成功:返回一个二维数组 找不到信息:返回0 * @access public */ function GetNInfo($items, $page, $condition = , $orderBy = order by id desc) { new WHXBB_Debug("GetNInfo() Start"); $limit = ; //取记录总数 $infoCount = $this->GetCount($condition); if ($infoCount == 0) return 0; if ($items != 0) { // 新建一个分页器 $this->pager = new Pager($infoCount, $items, $page); $startPos = $this->pager->startPos; $limit = " limit ".$startPos.", ".$items; } $sql = "select id, title, author from article where 1=1 $condition $orderBy $limit"; $result = @mysql_query($sql, $this->_conn); if( !$result ) return new WHXBB_Error("GetNInfo() Failed.($sql)", 1001); if(@mysql_num_rows($result) == 0) return 0; $i = 0; while ($arr = @mysql_fetch_array($result)) { while(list($var, $key) = each($arr)) { WHXBB::OperateString(&$arr[$var], out); } reset($arr); $info[$i] = $arr; $i++; } @mysql_free_result($result); new WHXBB_Debug("GetNInfo() Completed"); return $info; } } ?>

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