First commit

vendor/SimpleValidator/Validators/Alpha.php

@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Simple Validator.
+ *
+ * (c) Frédéric Guillot <contact@fredericguillot.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace SimpleValidator\Validators;
+
+use SimpleValidator\Base;
+
+/**
+ * @author Frédéric Guillot <contact@fredericguillot.com>
+ */
+class Alpha extends Base
+{
+    public function execute(array $data)
+    {
+        if (isset($data[$this->field]) && $data[$this->field] !== '') {
+
+            if (! ctype_alpha($data[$this->field])) {
+
+                return false;
+            }
+        }
+
+        return true;
+    }
+}