All those damned wp-config constants you can never remember.

Thanks, very helpful :)

I found this little fellow was missing:

// Turn off WSOD Protection (and don't send email notification)
define( 'WP_SANDBOX_SCRAPING', true );

I just added sandbox scraping. Thanks for mentioning it.

There are a ton of constants that are useful in different scenarios. I recommending checking out the default constants file: https://github.com/WordPress/WordPress/blob/master/wp-includes/default-constants.php

Thanks
here are few missing to boost site speed a little

define('COMPRESS_SCRIPTS', true);
define('COMPRESS_CSS', true);
define('ENFORCE_GZIP', true);

Thanks for the additions!

Hi @MikeNGarrett !

Pay attention to these two constants that you cannot override:

define('SHORTINIT', false); defined in wp-includes/ms-files.php (line 11)
define('WP_FEATURE_BETTER_PASSWORDS', true); defined in wp-includes/default-constants.php (line 123)

You cannot override them because WP team didn't check if the constant is already defined or not.
If you use them in your wp-config.php, you'll get a "Notice: Constant WP_FEATURE_BETTER_PASSWORDS already defined"

BTW, thanks for this ;)

Sources:
https://github.com/WordPress/WordPress/blob/master/wp-includes/ms-files.php#L11
https://github.com/WordPress/WordPress/blob/master/wp-includes/default-constants.php#L123

Hi @MikeNGarrett !

Pay attention to these two constants that you cannot override:

define('SHORTINIT', false); defined in wp-includes/ms-files.php (line 11)
define('WP_FEATURE_BETTER_PASSWORDS', true); defined in wp-includes/default-constants.php (line 123)

You cannot override them because WP team didn't check if the constant is already defined or not.
If you use them in your wp-config.php, you'll get a "Notice: Constant WP_FEATURE_BETTER_PASSWORDS already defined"

BTW, thanks for this ;)

Sources:
https://github.com/WordPress/WordPress/blob/master/wp-includes/ms-files.php#L11
https://github.com/WordPress/WordPress/blob/master/wp-includes/default-constants.php#L123

You're right about WP_FEATURE_BETTER_PASSWORDS, but you're wrong about SHORTINIT
https://github.com/WordPress/WordPress/blob/master/wp-includes/default-constants.php#L118

Hi @MikeNGarrett,

In a usual use of WP, you're right for SHORTINIT: the system gets index.php -> wp-blog-header.php -> wp-load.php -> wp-config.php -> wp-settings.php -> wp-includes/default-constants.php. If you define your constant in wp-config.php, WP will check it on default-constants.php file. Everything works welle.

But if you use WP as a multisite and you make an upload, WP will use the wp-includes/ms-files.php as a direct call. It will define the SHORTINIT constant and call wp-load.php -> wp-config.php (error !)

That's why I do not recommand to override it.

Nominating WP_DISABLE_FATAL_ERROR_HANDLER to the Fatal error handling section.