DbLog triggers PHP deprecation on PHP8.1 when running from CLI

Don't know.

Actually, there is more to it: the problem is that when running Drupal code via the CLI, the current Request object does not carry host/port (since it's not executed via a web server). So I am also incurring in problems like

TypeError: array_keys(): Argument #1 ($array) must be of type array, bool given in array_keys() (line 456 of /home/runner/work/drudbal/drudbal/core/lib/Drupal/Component/Utility/Html.php).
#1 /home/runner/work/drudbal/drudbal/core/lib/Drupal/Core/Mail/MailManager.php(288): Drupal\Component\Utility\Html::transformRootRelativeUrlsToAbsolute()
#2 /home/runner/work/drudbal/drudbal/core/lib/Drupal/Core/Mail/MailManager.php(180): Drupal\Core\Mail\MailManager->doMail()
...
...
...

which occur when parsing the url returned by \Drupal::request()->getSchemeAndHttpHost() which in this case is http://: that is invalid.

I solved both #7 and the OP by adding this to my CLI script, at the very beginning prior to the Request object being determined by Drupal's kernel:

// Some minimal values for $_SERVER.
$_SERVER['SERVER_NAME'] = 'localhost';
$_SERVER['SERVER_PORT'] = 80;
$_SERVER['HTTP_HOST'] = 'localhost';
$_SERVER['REMOTE_ADDR'] = '127.0.0.1';

AFAICU, using Request::createFromGlobals() does not provide defaults for missing keys of the $_SERVER PHP core environment variable, which is the case when a script is run from CLI. Request::create() would, but that's not what Drupal uses. Now, so far before PHP 8.1 that was not much of a problem since there was not tight check on this, but now in CLI we will start seeing TypeErrors being thrown. I do not know whether this is an issue for Drupal core itself, or should rather be addressed outside. Maybe in any case some docs would help.

Looks good.

1. +++ b/core/tests/Drupal/Tests/Core/Command/QuickStartTest.php
   @@ -116,6 +116,7 @@ public function testQuickStartCommand() {
   +    $this->assertStringNotContainsString('Deprecated', $process->getErrorOutput());
   

   Maybe here a comment, explaining why we are checking that no 'Deprecated' is present in the output, wolud be helpful.

2. +++ b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
   @@ -97,6 +97,39 @@ public function testSortLoggers() {
   +  public function testNullIp() {
   

   Nit: :void return typehint.

3. +++ b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
   @@ -97,6 +97,39 @@ public function testSortLoggers() {
   +    $logger = $this->createMock('Psr\Log\LoggerInterface');
   

   Nit: use LoggerInterface::class syntax.

4. +++ b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
   @@ -97,6 +97,39 @@ public function testSortLoggers() {
   +    $request_mock = $this->getMockBuilder('Symfony\Component\HttpFoundation\Request')
   

   Same

Thanks!