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Editing: DeepComparer.php

<?php

declare(strict_types=1);

namespace JsonSchema\Tool;

class DeepComparer
{
    /**
     * @param mixed $left
     * @param mixed $right
     */
    public static function isEqual($left, $right): bool
    {
        if ($left === null && $right === null) {
            return true;
        }

$isLeftScalar = is_scalar($left);
        $isLeftNumber = is_int($left) || is_float($left);
        $isRightScalar = is_scalar($right);
        $isRightNumber = is_int($right) || is_float($right);

if ($isLeftScalar && $isRightScalar) {
            /*
             * In Json-Schema mathematically equal numbers are compared equal
             */
            if ($isLeftNumber && $isRightNumber && (float) $left === (float) $right) {
                return true;
            }

return $left === $right;
        }

if ($isLeftScalar !== $isRightScalar) {
            return false;
        }

if (is_array($left) && is_array($right)) {
            return self::isArrayEqual($left, $right);
        }

if ($left instanceof \stdClass && $right instanceof \stdClass) {
            return self::isArrayEqual((array) $left, (array) $right);
        }

return false;
    }

/**
     * @param array<string|int, mixed> $left
     * @param array<string|int, mixed> $right
     */
    private static function isArrayEqual(array $left, array $right): bool
    {
        if (count($left) !== count($right)) {
            return false;
        }
        foreach ($left as $key => $value) {
            if (!array_key_exists($key, $right)) {
                return false;
            }

if (!self::isEqual($value, $right[$key])) {
                return false;
            }
        }

return true;
    }
}

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