小白求助:php数据库出错,Fatal error: Call to a member function exec() on a non-object in
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2022-05-03 21:05:10
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今天整理了下以前的pdo数据库封装类,但是在使用的时候报错,Fatal error: Call to a member function exec() on a non-object in sqlcontrol.class.php on line 45 这个是完整的错误提示,在以前没有修改的时候没有这个错误,这是怎么回事儿。
这个是我用的类
这个是我用的类
header("content-type:text/html;charset=utf-8");
classdbPdoManger
{private$conn='';//连接数据库服务器的资源类型private$host="";//主机地址private$dbname="";//数据库名称private$user="";//数据库用户名private$pwd="";//密码private$charset="";//链接编码private$config=array();
/*
* 构造函数初始化数据库
* 变量: $host连接的服务器名称
* $user登陆服务器的用户名
* $pwd登陆服务器的密码
*/publicfunction__construct($config)
{$this->config=$config;
$this->host=$this->config["host"];
$this->dbname=$this->config["dbname"];
$this->user=$this->config["user"];
$this->pwd=$this->config["pwd"];
$this->charset=$this->config["charset"];
//$this->open();
}
/*
* 打开数据库
*/publicfunctionopen()
{$this->conn=new PDO("mysql:host=".$this->host.";dbname=".$this->dbname,$this->user,$this-pwd);
$this->conn->query('set names '.$this->charset);
echo$this->conn;
}
/*
* 增删改
*/publicfunctionexecSql($sql)
{$bool=$this->conn->exec($sql);
if($bool>0)
{
returntrue;
}else
{
returnfalse;
}
}
/*
* 查询一条数据
*/publicfunctionquer($sql,$mode=PDO::FETCH_ASSOC)
{$result=$this->conn->query($sql);
$result->setFetchMode($mode);
$re=$result->fetch();
$result=null;
return$re;
}
/*
* 查询多条数据
*/publicfunctionquerMore($sql,$mode=PDO::FETCH_ASSOC)
{$result=$this->conn->query($sql);
$result->setFetchMode($mode);
$re=$result->fetchAll();
$result=null;
return$re;
}
/*查询指定表中有多少条记录*/publicfunctiongetTabRows($key,$tableName,$where)
{$sql="select count(".$key.") as 'c' from ".$tableName." where ".$where."";
$result=$this->conn->query($sql);
$result->setFetchMode(PDO::FETCH_ASSOC);
$re=$result->fetch();
$result=null;
return intval($re['c']);
}
/*关闭数据库*/publicfunctioncloseConn()
{$this->conn=null;
}
}
?>
下面是我调用这个类的代码
header("content-type:text/html;charset=utf-8");
include"sqlcontrol.class.php";
$config["host"]="localhost";
$config["dbname"]="biaodan";
$config["user"]="root";
$config["pwd"]="";
$config["charset"]="utf-8";
$db=new dbPdoManger($config);
$sql="INSERT INTO `test` (`name`, `nicheng`, `password`, `sex`, `icon`, `cardid`, `city`, `phone`, `qq`, `mail`, `liuyan`)
VALUES ('t', 't', 't', 't, 't', '1315', 'tttt', '598562', '79874564', 'tret', 'werterter')";
echo$db->execSql($sql);
求大神解救。。。
以上就介绍了小白求助:php数据库出错,Fatal error: Call to a member function exec() on a non-object in,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。
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