[alfreds]

Hi,

I have a little trouble with passing an array variable (say $file_names) from one function to another. Lets look in more details:

I have following funcitons:
- get_thumbs - to get the list of images in specific directory
- display_thumbs - to display them in ordered way
- display_large - to display larger image selected by user

During get_thumbs function goes through a specified directory and writes all filenames of images in an array.

The end of the get_thumbs states : return($file_names)
And the definition of function display_thumbs is following:

function display_thumbs ($file_names) {

Then, this functions displays all of the thumbnails, generate a link of a larger image for each of it, by awarding an id that corresponds to its place in array.

Afterwards, when user clicks on image, the display_large function is called, and the same array ($file_names) is passed along. BUT, the display_large function does not recieve it! At the same time, the id variable is passed!

Here is the way, the functions are called, basing on URL action variable:

PHP Code:

switch($_GET['action']) {

    

    case 'thumbs':

        get_thumbs();

        display_thumbs($file_names);

    break;

    

    case 'large':

       display_large($file_names, $_GET['id']);

    break;

    

     default:

       select_gallery($db);

} 

As i guess, than there might be something wrong with the break operations after each case.

I hope that my explanation is clear enough to get the idea. I would really appreciate your help, as i do not need any code sample, but rather an idea of what might be wrong!

Kaspars

[ermau]

You're doing it wrong. Using a definition of function display_thumbs ($file_names) { will NOT pass the variable $file_names along, it will simply want a variable there, and then call it $file_names in your function. The best way to do what you want is by using globals.

example:

PHP Code:

function get_thumbs()

{

    global $file_names;



   $file_names = 'blah';

}



function display_thumbs()

{

   global $file_names;



   echo $file_names;

}



etc.. 

If you define a variable in a function and use global on it, it will become a global variable, so it can be used outside of functions anywhere. It can also be used in other functions, as long as global is called on it again.

HTH, Eric.