PHP define is not registering constants

Question

I'm in the prcoess of setting up my (Wordpress) solution on a new production server. I now discovere that the PHP function define is not working.

I have this line of code in my functions.php:

define('INCLUDE_DIR', $_SERVER['DOCUMENT_ROOT'] . '/wp-content/themes/storelocator/include/');

Testing the following code:

if (!defined('INCLUDE_DIR'))
  echo ' NOT SET! ';

outputs NOT SET.

According to this page, I'm using constant correct in the include statement. The rest of the code in functions.php is running fine. I've checked.

Is this due to some PHP configuration? I'm using PHP v5.3.8

UPDATE:

define() is at the very top of functions.php file.
The if statement is at the very top of some-file.php.

I'm pretty sure functions.php is run before some-file.php.

UPDATE
It seems that I got this error because I had empty lines at the bottom of my PHP files. I removed the empty lines and now it seems to work :-/

Are you sure that the functions.php has been included/required BEFORE you do your defined() check? To assume you've found a PHP bug on such a simple widely-used function is pushing things a bit. — Marc B
– Marc B, Commented Oct 27, 2011 at 15:15
can you show where the include of functions.php is in relation to the check if defined? — Patrick at CloudBudgie
– Patrick at CloudBudgie, Commented Oct 27, 2011 at 15:18
@Marc B - functions.php is run before any other WP template file, right? So functions.php should run before 'some.template.php` file where I used defined(). — Steven
– Steven, Commented Oct 27, 2011 at 16:58
I avoid WP's internals like the plague, so no idea. Easy enough to verify though - just have functions.php log something or output something and see if you get that before an equivalent log/output call in your main function occurs. — Marc B
– Marc B, Commented Oct 27, 2011 at 16:59
@Patrick - functions.php is automatically run by Wordpress before any other template files are loaded. — Steven
– Steven, Commented Oct 27, 2011 at 17:00

Benjie · Accepted Answer · 2011-10-27 15:19:59Z

1

You must call the define() function before you check to see if the constant has been defined(). If you are doing so (try putting your define call immediately above your defined call) then I can see no reason why this wouldn't work.

answered Oct 27, 2011 at 15:19

Benjie

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5 Comments

Benjie Over a year ago

Can you confirm you've not put the define call inside a function accidentally?

Steven Over a year ago

All constants for my site is put in functions.php and no where else. I'm sure of that. It works fine on my local server and my previous test server, just not on this new server.

Benjie Over a year ago

In which case: are you absolutely positive you've edited the correct copy of the correct file? Try putting a die() statement just after the define line and seeing if the script does exit.

Steven Over a year ago

As I said to Marc, I tried echo at the top of both files to see what came first. It came in the right order. It seems that it might just have been empty line at the bottom of the PHP file that caused this error. My previous server var CentOS, but now I'm using Ubuntu. But I'm not sure if this has anything to do with this.

Steven Over a year ago

Check my comment above. Looks like empty lines at the bottom of the PHP file vas the cultrip. And since you're the only one with an answer, I will grant you the "solved" points :)

narudesu · Accepted Answer · 2016-07-15 13:08:07Z

1

I just had the exact same problem and solved it by removing underscores from the constant's name. Hopefully this helps.

answered Jul 15, 2016 at 13:08

narudesu

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