Please familiarise yourself with those changes before updating from an earlier release:
- The object cast operator was removed in favour of the class statement introduced in version 4.2.
- The global $connection and $transaction variables in the SMTP server's script contexts have been reserved for future use, and cannot be used.
- If using the ScanDLP() function's RULE pattern syntax with regular expressions, you need to manually add desired modifiers.
The following deprecation warnings will appear in preparation for future changes: