From bff09daf03ad85a1164cb8cd099b389a99876bcd Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Tue, 27 Dec 2016 14:32:50 +0100
Subject: [PATCH] Fix MultiSelectOptionType::checkUser()

---
 .../files/lib/system/option/MultiSelectOptionType.class.php  | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/wcfsetup/install/files/lib/system/option/MultiSelectOptionType.class.php b/wcfsetup/install/files/lib/system/option/MultiSelectOptionType.class.php
index 61a41a1194..6578ad2f84 100644
--- a/wcfsetup/install/files/lib/system/option/MultiSelectOptionType.class.php
+++ b/wcfsetup/install/files/lib/system/option/MultiSelectOptionType.class.php
@@ -106,9 +106,10 @@ class MultiSelectOptionType extends SelectOptionType {
 	public function checkUser(User $user, Option $option, $value) {
 		if (!is_array($value) || empty($value)) return false;
 		
-		$optionValues = explode('\n', $user->getUserOption($option->optionName));
+		$optionValues = explode("\n", $user->getUserOption($option->optionName));
 		
-		return count(array_diff($optionValues, $value)) > 0;
+		// check if the user has selected all options in $value array
+		return count(array_intersect($value, $optionValues)) === count($value);
 	}
 	
 	/**
-- 
2.20.1