PHP error output vB 4.2.5 RC1

[SkyStryder]

I have created this post just as point of info. I have 2 sites running these versions and these are the only errors that I am getting
in my error_log. I have not included any errors directly caused by plugins. I was hoping to post this before RC2 came out, but
as I logged in, I found I was too late. Anyway, since there are so few, is there any chance we could collectively solve them before
RC3 ?

Thank you for your time,
Rick

vB 4.2.5 RC1, PHP Version, 5.6.30, MySQL Version10.1.21-MariaDB

PHP Notice: Undefined index: HTTP_X_REQUESTED_WITH in /public_html/vbfs/includes/class_core.php on line 2033

PHP Notice: Undefined index: query in /public_html/vbfs/includes/class_core.php on line 2133

PHP Notice: Undefined variable: isie in /public_html/vbfs/includes/class_core.php on line 2216

PHP Notice: Use of undefined constant VB_FRAMEWORK - assumed 'VB_FRAMEWORK' in /public_html/vbfs/includes/functions.php on line 7717

PHP Strict Standards: Only variables should be assigned by reference in /public_html/vbfs/includes/class_dm_attachment.php on line 203, line 209, line 261, line 262

PHP Warning: Header may not contain NUL bytes in /public_html/vbfs/includes/functions.php on line 3976

PHP Warning: Invalid argument supplied for foreach() in /public_html/vbfs/includes/functions_threadedmode.php on line 210

PHP Warning: mysqli_query(): (42000/1305): FUNCTION site_db.XMLType does not exist in /public_html/vbfs/includes/class_core.php on line 1394

PHP Strict Standards: Only variables should be passed by reference in /public_html/vbfs/includes/class_dm_threadpost.php on line 349

[Paul M]

vB4 does not run php notice free, never has.
Not sure how you are getting them displayed, as vb turns them off.

The assign by reference warnings do actually look genuine.
If they are quick fixes then they should be ok to go in the final version.

The foreach error is invalid data passed to the function, so not an issue with that code
(which in turn suggests a problem with a thread - and who even uses threaded mode ?)

The other error must be some sort of addon, something tried to use a function called XMLType in SQL, which as far as I can tell, isnt a valid MySQLi function.

[SkyStryder]

Thank you Paul! After upgrading 2 versions of CentOS, 2 versions of PHP, https requirements, custom vB code, etc and errors turned full on, I have been pretty busy!