Save

vendor/workerman/validation/library/Rules/Key.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Rules;
+
+use Respect\Validation\Exceptions\ComponentException;
+use Respect\Validation\Validatable;
+
+use function array_key_exists;
+use function is_array;
+use function is_scalar;
+
+/**
+ * @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ * @author Emmerson Siqueira <emmersonsiqueira@gmail.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ */
+final class Key extends AbstractRelated
+{
+    /**
+     * @param mixed $reference
+     */
+    public function __construct($reference, ?Validatable $rule = null, bool $mandatory = true)
+    {
+        if (!is_scalar($reference) || $reference === '') {
+            throw new ComponentException('Invalid array key name');
+        }
+
+        parent::__construct($reference, $rule, $mandatory);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getReferenceValue($input)
+    {
+        return $input[$this->getReference()];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function hasReference($input): bool
+    {
+        return is_array($input) && array_key_exists($this->getReference(), $input);
+    }
+}