use interface_exists instead of class_exists

symfony · nicolas-grekas · Jan 3, 2018 · Jan 3, 2018 · Jan 3, 2018 · dc3a94e83a742e82a6d24d0cfd6d2fbf950dbfae
commit dc3a94e83a742e82a6d24d0cfd6d2fbf950dbfae
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
@@ -37,7 +37,7 @@ public function isEnabled()
        }

        // based on a symfony/symfony package, it crashes due a missing FormatterInterface from monolog/monolog
-        if (!class_exists(FormatterInterface::class)) {
+        if (!interface_exists(FormatterInterface::class)) {
            return false;
        }