Re: classes?
| From: | Joe Stump | Date: | Thu, 16 Nov 2000 06:56:28 +0000 |
| Subject: | Re: classes? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-25640@lists.php.net to get a copy of this message | ||
Sure - it's easy.
<?
class Bike{
var $speed;
var $brake;
var $accel;
function set_speed($new_speed){
$this->speed = $new_speed;
}
function return_speed(){
return $this->speed;
}
function set_brake($new_brake){
$this->brake = $new_brake;
}
function return_brake(){
return $this->brake;
}
// This is a constructor
// You can pass functions to this
// also.
function Bike(){
$this->set_brake(0);
$this->set_speed(0);
}
function SpeedUp($speed){
$this->set_speed(++$this->speed);
}
function Brake($pressure){
$this->set_speed(($this->speed - $pressure));
}
}
?>
Then you create a bike:
<?
$bike = new Bike();
$bike->SpeedUp(3);
$bike->Brake(1);
$current_speed = $bike->return_speed();
echo $current_speed;
?>
The result will be 2
--Joe
On Thu, Nov 16, 2000 at 01:16:59AM -0500, Kurth Bemis wrote:
> ok all i'm just starting to get involved with classes...and have a slight
> problem......i don't understand how to access functions..i have been
> reading the manual at php.net but that confuses even more....take a look at
> some code i wrote...
>
> print "<a href=\"$PHP_SELF?product=$product&quanity=1\">$title -
> $price</a>";
>
> thats to add a item to my cart......
>
> the class function looks like this...
>
> function add_item($table, $session, $product, $quantity) {
> $qty = $this->check_item($table, $session, $product);
> if($qty == 0) {
> $query = "INSERT INTO $table (session, product, quantity)
> VALUES ";
> $query .= "('$session', '$product',
> '$quantity') ";
> mysql_query($query);
> } else {
> $quantity += $qty;
> $query = "UPDATE $table SET quantity='$quantity' WHERE
> session='$session' AND ";
> $query .= "product='$product' ";
> mysql_query($query);
> }
> }
>
> my question is how to i pass that vars that i need to the class? am i
> making sense here?
>
> ~kurth
> Kurth Bemis - Network/Systems Administrator, USAExpress.net/Ozone Computer
>
> There is no sin except stupidity. -- Oscar Wilde
>
> kurth@usaexpress.net | http://www.usaexpress.net/kurth
> PGP key available - http://www.usaexpress.net/kurth/pgp
>
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> (http://www.distributed.net)
>
>
>
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================================================================================
= Joe Stump joestump98@yahoo.com http://www.miester.org =
================================================================================
"Real programmers don't comment their code.
It was hard to write, it should be hard to understand."