PHP CLI and Constants

Question

What is wrong with my code:

if(!defined(FILE_ROOT_PATH)){
    define('FILE_ROOT_PATH', $_SERVER['DOCUMENT_ROOT']);
}
echo 'Path: '.FILE_ROOT_PATH;

when run from CLI it gives:

Use of undefined constant FILE_ROOT_PATH - assumed 'FILE_ROOT_PATH' in ...

Can't I use constants on CLI?

alex · Accepted Answer · 2013-07-05 06:22:15Z

2

You need to quote the string you pass to defined().

if(!defined('FILE_ROOT_PATH')){
    define('FILE_ROOT_PATH', $_SERVER['DOCUMENT_ROOT']);
}
echo 'Path: '.FILE_ROOT_PATH;

Otherwise, you're trying to reference the constant before it exists.

answered Jul 5, 2013 at 6:22

alex

492k205 gold badges890 silver badges992 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

2 revs, 2 users 53% · Accepted Answer · 2013-07-05 06:25:48Z

1

This is wrong:

if(!defined(FILE_ROOT_PATH)){

defined() requires a string with the constant's name.

community wiki

Rajeev Ranjan · Accepted Answer · 2013-07-05 06:24:35Z

0

if(!defined('FILE_ROOT_PATH')){
define('FILE_ROOT_PATH', $_SERVER['DOCUMENT_ROOT']);
}
echo 'Path: '.FILE_ROOT_PATH;

answered Jul 5, 2013 at 6:24

Rajeev Ranjan

4,1523 gold badges30 silver badges42 bronze badges