PHP/enum

PHP enum support

Methods

kind of thing	name	returns	defined in
static function	cases()	array	UnitEnum
static function final	tryFrom(int or string $value)	?static	BackedEnum
static function final	from(int or string $value)	static	BackedEnum
dynamic property	$name	string	(UnitEnum)
dynamic property	$value	int or string	(BackedEnum)

Documentation

official

• Enumerations:
  • variable type
  • Enumerations language reference
• Basic:
  • UnitEnum interface
  • language reference
• Backed:
  • BackedEnum interface
  • language reference

3rd party

• stitcher.io

Sample Code

To get a UnitEnum enum from a case name (equivalent to from()/tryFrom()):

• constant("<enum name>::{$value}")

Tests

• is an enum an object (is_object)? [YES]
• is an enum seen as is_a UnitEnum? [YES]
• is an enum an instanceof UnitEnum? [YES]
• is an enum an instanceof enum? [no]