PHP 8.3: What's New and Changed

New Features

• Typed Class Constants
• Added json_validate function
• Dynamic class constant and Enum member fetch support
• gc_status() returns additional GC information
• Random extension: New \Random\Randomizer::getBytesFromString method
• Random extension: New \Random\Randomizer::getFloat() and nextFloat() methods

Syntax/Functionality Changes

• unserialize(): Upgrade E_NOTICE errors to E_WARNING