Question

i have 2 classes

1. for DB
2. for language

i want to use my language things in the DB
so it outputs the result

ex :

class db_control{

        var $db_connection, $lang_var;
        //create the function for the connection
        function db_connect(){
            //define some variables
            global $db_host, $db_username, $db_password, $db_name, $lang_var;
            $this->db_connection = mysql_connect("$db_host","$db_username","$db_password")or die("can't connect to server with these informations");
            //checl that the connection is established
            if($this->db_connection){
                echo $lang_vars->getvar("$langvals[lang_con_est]");
            }

but this

$lang_vars->getvar("$langvals[lang_con_est]");

doesn’t work
i mean it outputs many problems
and am sure my problem is that i didn’t define my variables and classes correctly

P.S : the language class is in file called language.php and this part is in DB.MySQL.php

EDIT :
this is the language class

class lang_vars{
    public static function getvar($variable){
        return $variable;
    }
}

i want the DB class to display text from the language class
thats why i used

 echo $lang_vars->getvar("$langvals[lang_con_est]");

but it doesn’t work
cuz when i declare the language class
$lang_vars = new lang_vars;
inside the db_control it shows error unexpected T_something expected T_Function
and when i declare it outside nothing up
hope i made things more clear now

Answer 1

Any reason why you are still using PHP4 syntax?

When creating an instance of the db_control class, pass the object to be stored as $lan_var into the constructor or set it via a dedicated setter. See Dependency Injection.

class DBControl
{
    protected $_lang;
    public function __construct($lang = NULL)
    {
        if($lang !== NULL) {
            $this->_lang = $_lang;
        }
    }
    public function setLang($lang)
    {
        $this->_lang = $lang;
    }
}

Then do either

$dbControl = new DBControl(new LangThing);

or

$dbControl = new DBControl;
$dbControl->setLang(new LangThing);

Also, get rid of the globals. Pass those in via Dependency Injection too.