[RESOLVED] Constants issue

reeksy

Just a quick question hopefully!

If you define a constant like so

define('MY_NAME','Jon');

Is there a way of writing an IF statement to see if MY_NAME has been defined or not?

I’m working with my configuration file error_reporting set to E_ALL so notices are displayed.

Sorry, this post is a bit vague!

Jon

reeksy

Ok resolved

If your config file is set up to display notices then to stop a notice like the following:

Notice: Use of undefined constant SIDE_BAR_FILE - assumed 'SIDE_BAR_FILE' in C:\Apache2\htdocs\***\admin\html_includes\dsp_html_top.php on line 25

Stick an '@' in front of the constant

The code i was struggling with was

$dir = RP . ITEM_DIRECTORY . 'html_includes/' . SIDE_BAR_FILE ;		
if (is_file($dir)) require_once $dir;

So using the method explained above; all is resolved using the '@' like so:

$dir = RP . ITEM_DIRECTORY . 'html_includes/' . @SIDE_BAR_FILE ;		
if (is_file($dir)) require_once $dir;

NogDog

The above will "work", but better style would probably be to use the defined() function in a conditional expression:

if(defined('SIDE_BAR_FILE'))
{
  $dir = RP . ITEM_DIRECTORY . 'html_includes/' . SIDE_BAR_FILE ;        

  if (is_file($dir))
  {
    require_once $dir; 
  }
}

reeksy

Good times - didn't realise that function existed!

Resolved.