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vendor/workerman/validation/library/Rules/Cpf.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 intval;
+use function mb_strlen;
+use function preg_match;
+use function preg_replace;
+
+/**
+ * Validates whether the input is a CPF (Brazilian Natural Persons Register) number.
+ *
+ * @author Alexandre Gomes Gaigalas <alganet@gmail.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author Jair Henrique <jair.henrique@gmail.com>
+ * @author Jayson Reis <santosdosreis@gmail.com>
+ * @author Jean Pimentel <jeanfap@gmail.com>
+ * @author William Espindola <oi@williamespindola.com.br>
+ */
+final class Cpf extends AbstractRule
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function validate($input): bool
+    {
+        // Code ported from jsfromhell.com
+        $c = preg_replace('/\D/', '', $input);
+
+        if (mb_strlen($c) != 11 || preg_match('/^' . $c[0] . '{11}$/', $c) || $c === '01234567890') {
+            return false;
+        }
+
+        $n = 0;
+        for ($s = 10, $i = 0; $s >= 2; ++$i, --$s) {
+            $n += intval($c[$i]) * $s;
+        }
+
+        if ($c[9] != (($n %= 11) < 2 ? 0 : 11 - $n)) {
+            return false;
+        }
+
+        $n = 0;
+        for ($s = 11, $i = 0; $s >= 2; ++$i, --$s) {
+            $n += intval($c[$i]) * $s;
+        }
+
+        $check = ($n %= 11) < 2 ? 0 : 11 - $n;
+
+        return $c[10] == $check;
+    }
+}