Twenty Eleven and php8.0

create_function() was deprecated in PHP 7.2 and officially removed in PHP 8. It can be replaced with either a named function or an anonymous function.

Generally, I wouldn’t recommend adding filters in wp-config.php. Ideally, that should be in a custom plugin or your theme’s functions.php file.

Here’s an example of using a named function:

add_filter( 'filesystem_method', 'yourname_filesystem_method' );

function yourname_filesystem_method( $method ) {
    return is_admin() ? 'direct' : $method;
}

Here’s an example of using an anonymous function:

add_filter( 'filesystem_method', function( $method ) {
    return is_admin() ? 'direct' : $method;
} );

And in wp-config.php, leave the define:

define( 'FS_CHMOD_DIR', 0751 );

Or if you want to only define it for the admin:

if ( is_admin() ) {
    define( 'FS_CHMOD_DIR', 0751 );
}

• This reply was modified 11 months ago by Justin Tadlock.

Just a little extra context: this is something that you’ve added to your wp-config.php file at some point. It’s unrelated to the theme and not a part of the default wp-config.php file in WordPress. Do you happen to know where you found the code? If you found it in a doc somewhere, maybe we can make sure it’s updated.

Thanks for your suggestions. I decided to go with

if ( is_admin() ) {
    define( 'FS_CHMOD_DIR', 0751 );
}

which works fine!

What I still do not understand: Since years, I just update WordPress, plugins and this theme: This was never a problem. With the switch to php8.0 – would you not assume these update strategy works as “someone” takes care of Twenty Elven (in the background) to avoid such problems?