From ec844556dca08baaf21c03b7cf88027c997d349b Mon Sep 17 00:00:00 2001
From: Woody Gilk <woody.gilk@gmail.com>
Date: Fri, 13 Feb 2026 14:21:10 -0600
Subject: [PATCH] Verify the return of class_implements()

---
 src/Assert.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Assert.php b/src/Assert.php
index f82ee5b..c87fbf4 100644
--- a/src/Assert.php
+++ b/src/Assert.php
@@ -1740,7 +1740,11 @@ public static function implementsInterface(mixed $value, mixed $interface, strin
     {
         static::objectish($value);
 
-        if (!\in_array($interface, \class_implements($value), true)) {
+        $implements = \class_implements($value);
+
+        static::isArray($implements);
+
+        if (!\in_array($interface, $implements, true)) {
             static::reportInvalidArgument(\sprintf(
                 $message ?: 'Expected an implementation of %2$s. Got: %s',
                 static::valueToString($value),