newb in OOP

sarmenhb · 09-30-2008, 07:15 AM

trying to learn oop for once lol

here is what i am trying

Code:

<?php
class mysql_con {

var $host;
var $username;
var $password;
var $db;

function connect($host,$username,$password,$db) {

	mysql_connect("$this->host","$this->username","$this->password") or die(mysql_error());
	mysql_select_db("$this->db") or die(mysql_error());


}
}
?>

then in another file i did

Code:

<?php
include("myclass.inc"); //this is the classes file name.
$connect = new mysql_con();
$connect->connect("localhost","root","password","dbtest");
?>

is this how its done? although when i try it , i put the correct credentials into the login,password,db place but it says wrong password. this is what im getting

Code:

Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'ODBC'@'localhost' (using password: NO) in C:\wamp\www\Appointment\myclass.inc on line 11
Access denied for user 'ODBC'@'localhost' (using password: NO)

could it be the "" that i've used??

jcorradino · 09-30-2008, 08:36 AM

does php even have a "this" keyword?

boycoda · 09-30-2008, 09:00 AM

$connect->connect($host,$username,$password,$db);

CoryMathews · 09-30-2008, 12:25 PM

Quote:

does php even have a "this" keyword?

doesn't just about every language? I have yet to use it in php but I have not ever used a language that didnt have it.

jcorradino · 09-30-2008, 03:45 PM

Quote:

Originally Posted by CoryMathews

doesn't just about every language? I have yet to use it in php but I have not ever used a language that didnt have it.

I have yet to use it as well, and I thought it was in there. But I was trying to find it on php.net and I could not find anything (turns out "this" is a really hard thing to find :p)

Salathe · 09-30-2008, 05:46 PM

PHP Manual: $this

sarmenhb · 09-30-2008, 06:51 PM

so is anyone gonna answer my question? because it doesnt seem to work the way i have defined it :(

Salathe · 09-30-2008, 06:56 PM

Before the mysql_connect line you'll want to add:

PHP Code:


			
$this->host     = $host;
$this->username = $username;
$this->password = $password;
$this->db       = $db;

Then they'll be available to use in the lines which follows.

ReSpawN · 10-08-2008, 10:14 AM

And usually, as an adittion to Salathe, you should never use $this-> in defining function variables. If it is a local function as in private and will be used in another one, it's fine, but you should not use it in the name itself, because $this defined the object and not passing a variable. Once defined IN the function, you can use $this. :)

As Salathe said, define first, then use. You can't set them manually and leave them blank.

The smartest thing to do, if you want this, is to create a simple function like mySQLinit(); and put every $this-> value in there, with a value (usually = '', = false or = -1).