mysql_fetch_array(): supplied argument is not a valid MySQL result resource

[byteit101]

I was working with OOP, and was testing a sql result class, but it gives me the following error:
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource. I think it has to do with assignment or garbage collection

$con = MYSQLconn();
$res = DSQL::PSQL('SELECT * FROM cat_nav',$con);
$res2 = DSQL::PSQL('SELECT * FROM cat_nav',$con);
$superres = new SQLResult($res2, $con);
while ($ar = Get($res))
{
    print_r($ar);
}
echo "end";
while ($ar = $superres->Get())
{
    print_r($ar);
 
}
function Get($rs)
{
    return mysql_fetch_array($rs);//no error here
}
class SQLResult
{
    private $innerResult;
    public function __contruct($sqlresult)
    {
        $this->$innerResult = $sqlresult;
    }
    public function Get()
    {
        return mysql_fetch_array($this->innerResult);//Error here
    }
 
}

[byteit101]

Found the error, I called the constructor __contruct instead of __construct