Non-enum class %s cannot implement interface %s¶
Description¶
UnitEnum is an PHP native and reserved interface. It is only used with enumerations. It is also handled by PHP itself, which adds it to enumerations: there is no need to add it explictely. This applies to BackedEnum
and UnitEnum
, as of PHP 8.4.
Example¶
<?php
class X implements YnitEnum {}
?>
Literal Examples¶
Non-enum class x cannot implement interface UnitEnum
Non-enum class x cannot implement interface BackEnum
Solutions¶
Turn the class into an enumeration.
Remove the UnitEnum implementation.