在php中从数据库读取值时出错

Question

I'm trying this code through which I'm getting the connection but I'm getting an error undefined variable.

Connected to MySQL
SELECT * FROM headcont;
Notice: Undefined variable: myQuery in C:\xampp\htdocs\Myweb\index.php on line 86
No database selected

require("connection.php");

if($con)
{
    $qry="SELECT * FROM headcont;";
    //mysql_select_db('content');
    echo $qry;
    $result=mysql_query($qry) or die($myQuery."<br/><br/>".mysql_error());

    while($row=mysql_fetch_assoc($result))
    {
            $title=$row[title];
            $desc=$row[description];
            echo $title;

        }
    }

I don't know what the issue is, can someone please help me with this?

Answer 1

require("connection.php");

if($con)
{
    $qry="SELECT * FROM headcont;";
    mysql_select_db('content');
    echo $qry;
    $result=mysql_query($qry) or die($myQuery."<br/><br/>".mysql_error());

    while($row=mysql_fetch_assoc($result))
    {
            $title=$row[title];
            $desc=$row[description];
            echo $title;

        }
    }