Undefined array key “SCRIPT_FILENAME”

Tobias,

I have been reading about this and it seems that SCRIPT_FILENAME may not always be set. For example: https://www.php.net/manual/en/reserved.variables.server.php

Data: $_SERVER[‘SCRIPT_FILENAME’]
Data type: String
Purpose: The absolute pathname of the origin PHP file, including the filename
Caveat: Not set on all PHP environments, may need setting by copying from __FILE__ before other files are included.

I did some additional testing and this is unique to running from a cron job. If I run from the command line:

php [full path removed for security]/wp-cron.php

there is no warning. Run the same commandnd run from the cron job does generate the warning. It seems that this just a quirk of how the PHP job is spawned, perhaps because of running as root for the cron job?

I don’t see any harm in re-arranging the order, the checks accomplish exactly the same thing and prevents a warning on this border case. PHP 8 is very strict about accessing non-existing array elements. If you are reluctant to re-order them, how about checking if the array index exists before accessing it, which is a better programming practice especially under PHP 8.

( isset($_SERVER[‘SCRIPT_FILENAME’]) && ‘wp-login.php’ === basename( $_SERVER[‘SCRIPT_FILENAME’] ) )

Thanks,

Kevin

Tobias,

Yes, it is a strange one. Thanks for your help!

Kevin