• Convert automatically from the string input into the backed enum value usingBackedEnum::from($value)
• Display a nice error message when the input value is not compatible with the typed enum
• UseBackedEnum::cases() to provide autocompletion. Also part of the error message.

Example

Given this 2 backed enums

enum StringEnum:string{case Image ='image';case Video ='video';}enum IntEnum:int{case First =1;case Second =2;}

We declare this command:

#[AsCommand('enum')]class EnumCommandextends Command{publicfunction__invoke(OutputInterface$output,        #[Argument]StringEnum$string,        #[Option] ?IntEnum$int =null,    ) {$output->writeln($string->value ??'No value');$output->writeln($int->value ??'No value');return0;    }}

Usage:

Error with invalidargument value:

Error with invalidoption value: