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vendor/workerman/validation/library/Rules/Equivalent.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 is_scalar;
+use function mb_strtoupper;
+
+/**
+ * Validates if the input is equivalent to some value.
+ *
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ */
+final class Equivalent extends AbstractRule
+{
+    /**
+     * @var mixed
+     */
+    private $compareTo;
+
+    /**
+     * Initializes the rule.
+     *
+     * @param mixed $compareTo
+     */
+    public function __construct($compareTo)
+    {
+        $this->compareTo = $compareTo;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function validate($input): bool
+    {
+        if (is_scalar($input)) {
+            return $this->isStringEquivalent((string) $input);
+        }
+
+        return $input == $this->compareTo;
+    }
+
+    private function isStringEquivalent(string $input): bool
+    {
+        if (!is_scalar($this->compareTo)) {
+            return false;
+        }
+
+        return mb_strtoupper((string) $input) === mb_strtoupper((string) $this->compareTo);
+    }
+}