Some of my PHP files are missing the ?> at the end of the file
?> seems to be missing in some of my files.
With a Diff viewer I can see that in some cases the last line has changed from
This is completely acceptable and has been done intentionally.
As you may know, if you try to run a PHP file which has whitespace (spaces or blank lines etc) after the final
?> then it can cause problems, usually the dreaded headers already sent error.
?> from php files is a way of mitigating against this error. PHP will quite happily work without it (automatically assuming the closing tag at the end of the file), and thus any whitespace at the end of the file will not cause errors.
More information can be found on this PHP.net page.
There is no special action to be taken. This is an ongoing process that will continue into future versions of Zen Cart.