I try to implement a custom function/action after a new user profile has been created in WordPress. To test the code I try to write a text in a file as proof of function execution. Here is the code that I have inserted at the end of the active theme's functions.php file
if ( ! function_exists( 'register_for_cmsa' ) ) :
function register_for_cmsa($user_id) {
// write in an external file
// writeLogWP($msg) is a function from a file I have included in index.php
writeLogWP("A new user is: " . $user_id);
}
add_action('user_register', 'register_for_cmsa');
endif;
Therefore, I added a new user through the admin panel. As soon as I validate the standard WP add user form (wp-admin/user-new.php) I get a blank page, meaning that the above code is in trouble. But the user is added in the database (it is visible in the users' list if I comment my function). The trouble here is when executing the writeLogWP("A new user is: " . $user_id) statement inside the register_for_cmsa() function. I tried to see if the statement works outside of the function, while always inside the functions.php file. And I noticed that it writes the message to the external file when I navigate in the WP site, BUT it publishes blank page as soon as I get into the admin dashboard section. My code is accepted in 'site' side but it is in error in the 'admin' one. The code is however not executed in the 'site' side because the hook is not triggered. It is triggered only if I go to the 'wp-admin/user-new.php' but ... I can' test it, as per the above reason. I am really confused, glad to have your comments and, why not, solution. Thanks
