From e2ef1efcf8912855e36107a41977e7165c790d8c Mon Sep 17 00:00:00 2001
From: Posp <jsem@posp.cz>
Date: Thu, 7 Sep 2023 22:18:38 +0200
Subject: [PATCH] Update functions-when.md

Callback in "when" has to return a value
---
 docs/functions-testing-tools/functions-when.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/functions-testing-tools/functions-when.md b/docs/functions-testing-tools/functions-when.md
index e5e32d3..ec4d340 100644
--- a/docs/functions-testing-tools/functions-when.md
+++ b/docs/functions-testing-tools/functions-when.md
@@ -85,7 +85,7 @@ The last of the when-related methods allows to make a function behave just like
 
 ```php
 Functions\when('duplicate')->alias(function($value) {
-    "Was ".$value.", now is ".($value * 2);
+    return "Was ".$value.", now is ".($value * 2);
 });
 
 Functions\when('bigger')->alias('strtoupper');