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1441 ariadna 1 
<?php
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declare(strict_types=1);
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namespace MaxMind\Db\Reader;
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class Util
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{
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    /**
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     * @param resource    $stream
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     * @param int<0, max> $numberOfBytes
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     */
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    public static function read($stream, int $offset, int $numberOfBytes): string
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    {
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        if ($numberOfBytes === 0) {
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            return '';
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        }
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        if (fseek($stream, $offset) === 0) {
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            $value = fread($stream, $numberOfBytes);
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            // We check that the number of bytes read is equal to the number
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            // asked for. We use ftell as getting the length of $value is
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            // much slower.
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            if ($value !== false && ftell($stream) - $offset === $numberOfBytes) {
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                return $value;
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            }
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        }
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        throw new InvalidDatabaseException(
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            'The MaxMind DB file contains bad data'
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        );
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    }
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}