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48405271c5The `{{name}}` placeholder could represent different things depending on
the state of the Result, and referring to it as `{{name}}` seems
arbitrary. This commit changes it to `{{subject}}`, which is much more
generic and it describes well what that placeholder can mean.
40 lines
938 B
PHP
40 lines
938 B
PHP
<?php
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/*
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* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
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* SPDX-License-Identifier: MIT
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use Attribute;
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use Respect\Validation\Message\Template;
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use Respect\Validation\Rules\Core\Simple;
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use function is_numeric;
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#[Attribute(Attribute::TARGET_PROPERTY | Attribute::IS_REPEATABLE)]
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#[Template(
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'{{subject}} must be a valid Fibonacci number',
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'{{subject}} must not be a valid Fibonacci number',
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)]
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final class Fibonacci extends Simple
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{
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public function isValid(mixed $input): bool
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{
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if (!is_numeric($input)) {
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return false;
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}
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$sequence = [0, 1];
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$position = 1;
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while ($input > $sequence[$position]) {
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++$position;
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$sequence[$position] = $sequence[$position - 1] + $sequence[$position - 2];
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}
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return $sequence[$position] === (int) $input;
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}
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}
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