creating dynamic oop...

[Anon]

Hello!! I'm been thinking how some PHP coders do this kind of miracle. 🙂

I have seen a code which automatically adds new property or variable into the current class. For example, the mysql_fetch_object returns this kind of data.

$ret = mysql_fetch_object($qlink);

$fname = $ret->fname;
$lname = $ret->lname;

I want to know how do this kind of coding works? You see a new class was formed by this mysql function call. How do u implement that in other pHP programming exercise.

[bethj]

No miracle. Something like this:

//The Class
class a
{
var $b;
function a($c)
{
$this->b=$c;
}

// The Function
function make_a($d)
{
$obj = new a($d);
return $obj; // the function returns a new object
}

// The Code
$x = make_a("Hello");
echo $x->b; // echos "Hello"

HTH

[Anon]

Thanks for the reply!! But, did you noticed how mysql_fetch_object returns an object with some properties (variables) which is named after the fields that were selected.

example
I have an SQL STATEMENT

$sql =" SELECT username,password from users";
$qlink = mysql_query($db,$sql);
$row = mysql_fetch_object($qlink);

then now i can call,
echo "$row->username
$row->password
";

You see the object property named username and password was derived based on the selected fields.? If I again do an sql query.

$sql =" SELECT country,city from profile";

$qlink = mysql_query($db,$sql);
$row = mysql_fetch_object($qlink);

then now i can call,

echo "$row->country
$row->profile
";

In your example, the property b was already defined in class a(). Thats how you made the function make_a() returned an object .... but its object property was already defined. Its very different from what mysql_fetch_object does.. to me this is very insteresting... its like your enabling property insertion in runtime. 🙂

Jun