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PHP 8.1

This version is no longer officially supported.

Official support refers to that provided direct by the PHP Project.

If you install PHP via third-party packages, support timelines may be different. Please read the Release Support Policy for more information.

Release Date
2021-11-25
Bugfix Support
Security Support
Latest Release: 8.1.34 (2025-12-18)

Upgrade Tips

  • Enumerations
    Native support for Enumerations (Enums), allowing restricted sets of possible values for a type.
  • Fibers
    Core support for asynchronous programming using Fibers for cooperative multitasking.
  • Readonly Properties
    Class properties can be permanently marked readonly, allowing initialization only once.
  • First-Class Callable Syntax
    Create closures from callables cleanly using the new ... operator.