Derive the `Disallow` and `Allow` directives in `do_robots()` from `admin_url()` and `admin_url( 'admin-ajax.php' )` rather than from a hardcoded `/wp-admin/` path built off `site_url()`. Only the URL path portion is emitted, as before, so installs that relocate or filter their admin URL now produce a correct default `robots.txt`.

Also guard the `Content-Type` header with a `headers_sent()` check to avoid a warning when the headers have already been sent.

Developed in #11998.
Follow-up to r34985.

Props masteradhoc, yogeshbhutkar, hrohh, westonruter, mukeshpanchal27, 1ucay.
Fixes #63467.


git-svn-id: https://develop.svn.wordpress.org/trunk@62633 602fd350-edb4-49c9-b593-d223f7449a82

The `ini_get()` function is called unconditionally early in the bootstrap process, so there is no need for subsequent `function_exists( 'ini_get' )` checks.

Follow-up to [44986], [45104].

Props siliconforks, shreyasikhar26, ankitkumarshah, westonruter, SergeyBiryukov.
Fixes #65423.

git-svn-id: https://develop.svn.wordpress.org/trunk@62634 602fd350-edb4-49c9-b593-d223f7449a82

This brings the `WP_Error` class to full PHPStan rule level 10 compliance.

Also make use of null coalescing operator where appropriate, and simplify `has_errors()` method.

Developed in #12405.
Follow-up to r42761, r49115, r49116.

See #64898, #64897.


git-svn-id: https://develop.svn.wordpress.org/trunk@62635 602fd350-edb4-49c9-b593-d223f7449a82

…p()` and `::chown()`.

This applies the equivalent fix which had previously been done to `::chmod()`. Tests are added for all three methods.

Developed in subset of #11593.
Follow-up to r12997.

Fixes #65584.
See #65409, #11261.


git-svn-id: https://develop.svn.wordpress.org/trunk@62636 602fd350-edb4-49c9-b593-d223f7449a82

Change the optional constructor argument of `WP_Filesystem_FTPext`, `WP_Filesystem_ftpsockets`, and `WP_Filesystem_SSH2` from an empty string default to an empty `array`, matching how the argument is actually consumed, and improve the associated DocBlocks.

These classes were also brought to adherence with PHPStan rule level 10:

* Add `FileListing` and `Options` array shapes, and initialize each transport's `$options` to a complete default array before any early return.
* Correct several inaccurate `@return` descriptions, including the `group()` methods that had been describing the owner.
* Allow `WP_Filesystem_SSH2::connect()` to be retried after a failed connection attempt.
* Stop `WP_Filesystem_FTPext::parselisting()` from leaking its intermediate date-parsing keys into the returned listing.
* Add `ext-ftp` and `ext-ssh2` to the suggested extensions in `composer.json`.

Developed in #11593.
Follow-up to r62635, r62636.

Props soean, westonruter, mukesh27.
See #65584, #64898.
Fixes #65409.


git-svn-id: https://develop.svn.wordpress.org/trunk@62637 602fd350-edb4-49c9-b593-d223f7449a82