Question

运行以下代码后出现错误：Fatal error: Call to a member function execute() on a non-object 求大神解决

@$db=new MySQLi("localhost","root","","bookorama");
if(mysqli_connect_errno()){
echo "Error:Could not coonect to database.Please try again later";
exit;
}
$query="insert into books values(?,?,?,?)";
$result=$db->prepare($query);
$result=$result->bind_param("sssd",$isbn,$author,$title,$price);
$result->execute();

Answer 1

致命错误：调用一个非对象的成员函数execute()