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

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+<?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 function ctype_xdigit;
+
+/**
+ * @author Andre Ramaciotti <andre@ramaciotti.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ */
+final class Xdigit extends AbstractFilterRule
+{
+    /**
+     * {@inheritDoc}
+     */
+    protected function validateFilteredInput(string $input): bool
+    {
+        return ctype_xdigit($input);
+    }
+}