1 files changed, 42 insertions, 0 deletions

diff --git a/vendor/symfony/form/Symfony/Component/Form/Util/FormUtil.php b/vendor/symfony/form/Symfony/Component/Form/Util/FormUtil.php
new file mode 100644
index 00000000..7647691e
--- /dev/null
+++ b/vendor/symfony/form/Symfony/Component/Form/Util/FormUtil.php
@@ -0,0 +1,42 @@
+<?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\Form\Util;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class FormUtil
+{
+    /**
+     * This class should not be instantiated
+     */
+    private function __construct() {}
+
+    /**
+     * Returns whether the given data is empty.
+     *
+     * This logic is reused multiple times throughout the processing of
+     * a form and needs to be consistent. PHP's keyword `empty` cannot
+     * be used as it also considers 0 and "0" to be empty.
+     *
+     * @param  mixed $data
+     *
+     * @return Boolean
+     */
+    public static function isEmpty($data)
+    {
+        // Should not do a check for array() === $data!!!
+        // This method is used in occurrences where arrays are
+        // not considered to be empty, ever.
+        return null === $data || '' === $data;
+    }
+}