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vendor/workerman/validation/library/Rules/LeapDate.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 DateTimeImmutable;
+use DateTimeInterface;
+
+use function is_scalar;
+
+/**
+ * Validates if a date is leap.
+ *
+ * @author Danilo Benevides <danilobenevides01@gmail.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author Jayson Reis <santosdosreis@gmail.com>
+ */
+final class LeapDate extends AbstractRule
+{
+    /**
+     * @var string
+     */
+    private $format;
+
+    /**
+     * Initializes the rule with the expected format.
+     */
+    public function __construct(string $format)
+    {
+        $this->format = $format;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function validate($input): bool
+    {
+        if ($input instanceof DateTimeInterface) {
+            return $input->format('m-d') === '02-29';
+        }
+
+        if (is_scalar($input)) {
+            return $this->validate(DateTimeImmutable::createFromFormat($this->format, (string) $input));
+        }
+
+        return false;
+    }
+}