* Move the directory being tested to the `data` directory, for consistency with other test data.
* Set the `svn:eol-style` property to `native`, for consistency with other files.
* Correct the test class name in `dummy.txt`.
Follow-up to [51246], [51910], [51911].
See #52241, #53363.
git-svn-id: https://develop.svn.wordpress.org/trunk@51938 602fd350-edb4-49c9-b593-d223f7449a82
>PHP natively allows for autovivification (auto-creation of arrays from falsey values). This feature is very useful and used in a lot of PHP projects, especially if the variable is undefined. However, there is a little oddity that allows creating an array from a `false` and `null` value.
The above quote is from the PHP 8.1 RFC and the (accepted) RFC changes the behaviour described above to deprecated auto creation of arrays from `false`. As it is deprecated, it _will_ still work for the time being, but as of PHP 9.0, this will become a Fatal Error, so we may as well fix it now.
The `recurse_dirsize()` function retrieves a transient and places it in the `$directory_cache` variable, but the `get_transient()` function in WP returns `false` when the transient doesn't exist, which subsequently can lead to the above mentioned deprecation notice.
By verifying that the `$directory_cache` variable is an array before assigning to it and initializing it to an empty array, if it's not, we prevent the deprecation notice, as well as harden the function against potentially corrupted transients where this transient would not return the expected array format, but some other variable type.
Includes adding dedicated unit tests for both the PHP 8.1 issue, as well as the hardening against corrupted transients.
Includes some girl-scouting: touching up a parameter description and some code layout.
Refs:
* https://wiki.php.net/rfc/autovivification_false
* https://developer.wordpress.org/reference/functions/get_transient/
Follow-up to [49212], [49744].
Props jrf, hellofromTonya.
See #53635.
git-svn-id: https://develop.svn.wordpress.org/trunk@51911 602fd350-edb4-49c9-b593-d223f7449a82
When the PHP native `dirname()` function is used on a Windows disk name - i.e. `C:\`-, it will return the same, i.e, it will return `C:\` again.
The `clean_dirsize_cache()` function didn't have guard clause against this, which meant that on Windows based systems and IIS servers, this function would result in WordPress getting stuck into an infinite loop.
The adjustment to the `while` part of the function fix this by checking if the return value of the `dirname()` function call is the same as the original path passed to `dirname()`, which effectively fixes the infinite loop.
A number of other improvements made:
1. Add input validation for the `$path` parameter to guard against invalid variable types being passed into the function.
2. Guard against an empty `$path` parameter, which would result in an infinite loop on both Windows as well as *nix based systems.
In both these cases, a PHP notice will now be thrown.
3. When a non-empty string, which isn't a path would previously be passed, the `dirname()` function would transform that to a `.` and the `.` key in the transient cache would be cleared out.
This was a bug as there is no relation between a non-path string and the root directory of file system.
This bug has been fixed by checking that something could actually be a path and handling received non-empty, non-path input parameters in a special way, i.e only removing the cache key for the passed string and bowing out from further processing.
Unfortunately, no tests can be added to guard against the infinite loop.
For the other fixes, we have added appropriate unit tests.
Follow-up up [49212], [49616], [49744].
Props jrf, hellofromTonya, raubvogel, sergeybiryukov, codezen8, sjlevy, drosmog, teachlynx, ekojr, bartoszgrzesik, joegasper, janthiel, josephdickson, ocean90, audrasjb.
Fixes#52241.
git-svn-id: https://develop.svn.wordpress.org/trunk@51910 602fd350-edb4-49c9-b593-d223f7449a82
