label.unused

Code example

<?php declare(strict_types = 1);

function doFoo(): void
{
	unused:
	echo 'hello';
}

Why is it reported?

The label unused is defined but there is no goto statement that references it. Labels only have meaning as targets for goto statements. An unreferenced label is dead code that likely indicates leftover code from refactoring or a missing goto statement.

A label is also considered unused when its corresponding goto statement is in a different scope. Labels defined in an outer function are not reachable from closures, anonymous classes, or nested functions.

How to fix it

Remove the unused label:

 function doFoo(): void
 {
-	unused:
 	echo 'hello';
 }

Or add the corresponding goto statement if the label was intended to be used:

 function doFoo(): void
 {
+	if (rand(0, 1) === 0) {
+		goto end;
+	}
+	echo 'hello';
-	unused:
-	echo 'hello';
+	end:
+	echo 'done';
 }