Laravel 5.7中的常量抛出已经定义的错误

Question

I have created a project in Laravel 5.7 and created the file constants.php in config directory. When I tried to run php artisan config:cache, I am getting the following error. "ErrorException : Constant XXX_XXX already defined"

I have defined all the constants as define('XXXX_XXXX', 'bla bla'); All these are standard constants needed for my package.

I have done the following:

1. I have searched the whole project and it is clear that I have never defined the same anywhere else.
2. If I remove that constant, it shows error at the next define().
3. If I remove the file from config directory, the artisan command gets executed successfully and I can see the config cache file in bootstrap/cache directory. but my program aborts due to error (as constants are not defined) even after I paste back the file in config directory.
4. If I remove the config cache file from the bootstrap/cache directory, the code gets executed perfectly normal ( i have not ran the command config:cache).

I very much need this constants and the same time cache the configs to run. I am not able guess the problem.

Note : Contents of config/contants.php all are define('XXX', 'xxx'); Simply echo XYZ; wherever needed. Standard php constants.

Answer 1

try this way

define constant value below

if (!defined('constant')) define('constant', 'value');