[SOLVED] General question

[tamagraphics]

I have a general question that I feel like an idiot asking...

 

in the following code snip  what does the $this-> for???  I see this kind of thing all the time using the format of $this-> or $this =>???

 

function cart($cart_id) {

  $this -> dblink = mysql_connect($this -> hostname, $this -> username, $this -> password);

}

 

 

 

What is that all about, a new way of assinging a variable or what?

 

Thanks for all the help

 

 

[per1os]

If you are working in a class $this references that class.

 

for example

 

<?php
class cart {
   function cart($hostname, $username, $password) {
           $this->hostname = $hostname;
           $this->username = $username;
           $this->password = $password;
   }

   function get_cart($cart_id) {  
       $this -> dblink = mysql_connect($this -> hostname, $this -> username, $this -> password);

   }
}

 

No works throughout the class by calling the $this->hostname should print the host name.

[tamagraphics]

so is

 

$this -> hostname;

 

the same as

 

$hostname;

 

and    $this -> check_quantity($qty)    this would run the function called check_quantity()  ????

 

inside the class anyway??

 

[per1os]

Right, but $hostname is only local to the function it was defined in. Setting it to $this->hostname makes it local to the whole class it is housed in.