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PHP 8 upgrade

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Game File Reference


Useful Components

Official

  • Deck: a PHP component to manage cards (deck, hands, picking cards, moving cards, shuffle deck, ...).
  • Draggable: a JS component to manage drag'n'drop actions.
  • Counter: a JS component to manage a counter that can increase/decrease (ex: player's score).
  • ExpandableSection: a JS component to manage a rectangular block of HTML than can be displayed/hidden.
  • Scrollmap: a JS component to manage a scrollable game area (useful when the game area can be infinite. Examples: Saboteur or Takenoko games).
  • Stock: a JS component to manage and display a set of game elements displayed at a position.
  • Zone: a JS component to manage a zone of the board where several game elements can come and leave, but should be well displayed together (See for example: token's places at Can't Stop).

Undocumented component (if somebody knows please help with docs)

  • Wrapper: a JS component to wrap a <div> element around its child, even if these elements are absolute positioned.

Unofficial


Game Development Process


Guides for Common Topics


Miscellaneous Resources

Starting December 2023, BGA is upgrading game servers from PHP 7.4 to PHP 8.2. See https://boardgamearena.com/forum/viewtopic.php?t=33940 for more information.

Current Status

BGA studio and production are both currently running in a mixed environment, with some servers on PHP 7 and others on PHP 8. Until this upgrade is fully completed, your game code must be compatible with both versions of PHP. You cannot use any PHP 8-specific features yet.

The following servers are currently running PHP 8.2:

  • PHP 8 gameservers in Studio: 2
  • PHP 8 gameservers in Production: 5, 7, 8, 12

How to control your game's PHP version

In studio, you can switch between PHP 7.4 and PHP 8.2 using the Managed Game page. You can also change the gameserver portion of the URL between "/1" and "/2" (although this doesn't test your game setup code). For example, https://studio.boardgamearena.com/1/nowboarding?table=575275 is PHP 7 and https://studio.boardgamearena.com/2/nowboarding?table=575275 is PHP 8.

In production, you can add the PHP8 tag using the Game Metadata Manager page. This allows (but does not guarantee) new real-time tables for your game to be created on one of the PHP 8 servers. All turn-based tables continue to run on the PHP 7 servers.

How to fix your game's code

Here are a few common scenarios that may make your game incompatible with PHP 8:

implode argument order

The signature of this function is implode(string $separator, array $array): string.

PHP 7 accepted the arguments in either order, but PHP 8 requires the string argument first and the array argument second.

See https://www.php.net/implode

Static calls to non-static methods

PHP 8 no longer allows non-static class methods to be called statically. This may affect your game if you've created a class which extends APP_GameClass and you call various BGA framework functions statically using self::.

Non-compliant example: 

   class PlayerMgr extends APP_GameClass {
       public static function getMaxScore() {
           return self::getUniqueValueFromDB("SELECT MAX(player_score) FROM player WHERE player_eliminated = 0 AND player_zombie = 0");
       }

See https://php.watch/versions/8.0/non-static-static-call-fatal-error

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