extending doesn't work

[[deleted]]

i have 2 classes, the first one is called functions and the second one i called upload/ all end with .inc.php the functions class is working perfectly, but when i use the upload class (extends Functions), he finds the class and the methods but cannot corectly execute them. (vars defined in Functions are empty for the Upload class.)

ERROR:
Fatal error: Cannot instantiate non-existent class: upload in test/archiv.inc.php on line 5

what could be the mistake i do, so that the vars are 'visible'. i am new to classes in between.

regards

[jernhenrik]

• What object are u instantiating? The one from functions or the one from upload extends functions?

• Have u included all classes in your 'main' file

• Do u use constructors?

• Do u call correctly with the $obj->??

Some code would be helpfull!

http://www.php.net/manual/en/language.oop.php

[[deleted]]

archiv.inc.php:

<?php
include(upload.inc.php)
include(functions.inc.php)

$objUpload = new Upload;
$objUpload->exdendArchiv($_FILES);
?>

thats all i do. The class Upload extends as i said from Functions and know the mehtods (using $this->function())

But executing exdendArchiv() tells me that sql query failed. And that because the var in the class Functions is not 'visible' for the class Upload altough it know the methods but obviously can not establish adb connection using the method from the class Functions.

thanks in advance

[jernhenrik]

<?php
//test.php
class A
{
 var $a_test;
 function test() //set value for $a_test
 {
  $this->a_test="setting value for a_test by test()";
 }
 function showtest() //function to retrieve object member variable value
 {
  echo $this->a_test;
 }


}

class B extends A // B is inheriting memberfunctions and variables of A
{
 function anothertest() //this function is to test for retrieving membervariables of A by using a private function from A
 {
  parent::showtest();
 }

 function thirdtest() //this function is to retrieve membervariables from A 'directly'
 {
  echo $this->a_test;
 }

}
?>

<?php
//index.php

include ('test.php');
$objB=new B;
$objB->test(); // simple test of inheritance setting value of $a_test see class A
$objB->anothertest(); //here u use a class B memberfunction to call a "private function" of class A
echo "<hr>";
$objB->thirdtest(); //calling the member variables of A directly

?>

Take a look at the above example, if i understand correctly u wish to retrieve the $a_test variable from the class A (when comparing to ur example) and that is done in the function thirdtest().