数据访问类
访问类
<?php class DBDA{ public $host="localhost"; //服务器地址 public $uid="root"; //用户名 public $pwd="123"; //密码 public $dbname="mydb"; //数据库名称 /* 执行一条SQL语句的方法 @param sql 要执行的SQL语句 @param type SQL语句的类型，0代表查询 1代表增删改 @return 如果是查询语句返回二维数组，如果是增删改返回true或false */ public function query($sql,$type=0){ $db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname); $result = $db->query($sql); if($type){ return $result; }else{ return $result->fetch_all(); } } }
示例
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <body> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>民族代号</td> <td>民族名称</td> </tr> <?php require_once "./DBDA.class.php"; $db = new DBDA(); $sql = "select * from nation"; $arr = $db->query($sql); foreach($arr as $v){ echo "<tr> <td>{$v[0]}</td> <td>{$v[1]}</td> </tr>"; } ?> </table> <div style="200px; height:20px;border:1px solid red"> <div style=" background-color:#F00; float:left;height:20px; 50%"></div> </div> </body> </html>