Actualización

vendor/symfony/expression-language/Tests/Fixtures/TestProvider.php

@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ExpressionLanguage\Tests\Fixtures;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunction;
+use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
+use Symfony\Component\ExpressionLanguage\ExpressionPhpFunction;
+
+class TestProvider implements ExpressionFunctionProviderInterface
+{
+    public function getFunctions()
+    {
+        return [
+            new ExpressionFunction('identity', function ($input) {
+                return $input;
+            }, function (array $values, $input) {
+                return $input;
+            }),
+
+            ExpressionFunction::fromPhp('strtoupper'),
+
+            ExpressionFunction::fromPhp('\strtolower'),
+
+            ExpressionFunction::fromPhp('Symfony\Component\ExpressionLanguage\Tests\Fixtures\fn_namespaced', 'fn_namespaced'),
+        ];
+    }
+}
+
+function fn_namespaced()
+{
+    return true;
+}