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cacme/vendor/workerman/validation/library/Rules/Imei.php

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+<?php
+
+/*
+ * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
+ * SPDX-License-Identifier: MIT
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Rules;
+
+use function is_scalar;
+use function mb_strlen;
+use function preg_replace;
+
+/**
+ * Validates is the input is a valid IMEI.
+ *
+ * @author Alexander Gorshkov <mazanax@yandex.ru>
+ * @author Danilo Benevides <danilobenevides01@gmail.com>
+ * @author Diego Oliveira <contato@diegoholiveira.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ */
+final class Imei extends AbstractRule
+{
+    private const IMEI_SIZE = 15;
+
+    /**
+     * @see https://en.wikipedia.org/wiki/International_Mobile_Station_Equipment_Identity
+     *
+     * {@inheritDoc}
+     */
+    public function validate($input): bool
+    {
+        if (!is_scalar($input)) {
+            return false;
+        }
+
+        $numbers = (string) preg_replace('/\D/', '', (string) $input);
+        if (mb_strlen($numbers) != self::IMEI_SIZE) {
+            return false;
+        }
+
+        return (new Luhn())->validate($numbers);
+    }
+}