1.2.1296. Unused Enumeration Case

Those are enumeration cases which are defined, yet not used.

The error message when the case is missing mentions a class constant : this is because enumeration cases and class constants use the same configuration. They are only distinguished by their definition, which, here, does not exists.

<?php

enum x {
    case A;
    case C;

    const F = 1;
}

function foo(x $a) {}

foo(x::A);

?>

1.2.1296.1. Related PHP errors

• Undefined constant x::C

1.2.1296.2. Connex PHP features

• enum

1.2.1296.2.1. Suggestions

• Use the case in the code

• Remove the case in the code

• Fix the name of the case

• Turn the case in a constant

1.2.1296.2.2. Specs

Short name	Enums/UnusedEnumCase
Rulesets	All, Analyze, Changed Behavior, Dead code
Exakat since	2.4.0
PHP Version	With PHP 8.1 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Related rule	Undefined Enumcase
Available in	Entreprise Edition, Exakat Cloud