How to check if variable is an Enum or a Case?

Question

There is a lot of type checking functions in PHP (is_string, is_resource etc) but there is no function to check if variable is an Enum or a Case. How to check it properly?

https://www.php.net/manual/en/function.enum-exists.php – mickmackusa Apr 19 '22 at 23:37 — mickmackusa, Apr 19 '22 at 23:37

score 1 · Answer 1 · answered Apr 19 '22 at 23:24

1

You can check that it implements the UnitEnum interface.

if ($variable instanceof UnitEnum) echo "it's an enum.";

According to the PHP manual, this interface exists specifically for type checking.

answered Apr 19 '22 at 23:24

Don't Panic

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This is a duplicate question and your advice is found on the dupe target. – mickmackusa Apr 19 '22 at 23:38

How to check if variable is an Enum or a Case?

1 Answers1