Stream

14class Stream implements StreamInterface15{16    use StreamTrait;17    /** @var resource|null A resource reference */18    private $stream;19    /** @var bool */20    private $seekable;21    /** @var bool */22    private $readable;23    /** @var bool */24    private $writable;25    /** @var array|mixed|void|bool|null */26    private $uri;27    /** @var int|null */28    private $size;29    /** @var array Hash of readable and writable stream types */30    private const READ_WRITE_HASH = ['read' => ['r' => \true, 'w+' => \true, 'r+' => \true, 'x+' => \true, 'c+' => \true, 'rb' => \true, 'w+b' => \true, 'r+b' => \true, 'x+b' => \true, 'c+b' => \true, 'rt' => \true, 'w+t' => \true, 'r+t' => \true, 'x+t' => \true, 'c+t' => \true, 'a+' => \true], 'write' => ['w' => \true, 'w+' => \true, 'rw' => \true, 'r+' => \true, 'x+' => \true, 'c+' => \true, 'wb' => \true, 'w+b' => \true, 'r+b' => \true, 'x+b' => \true, 'c+b' => \true, 'w+t' => \true, 'r+t' => \true, 'x+t' => \true, 'c+t' => \true, 'a' => \true, 'a+' => \true]];31    /**32     * @param resource $body33     */34    public function __construct($body)35    {36        if (!\is_resource($body)) {37            throw new \InvalidArgumentException('First argument to Stream::__construct() must be resource');38        }39        $this->stream = $body;40        $meta = \stream_get_meta_data($this->stream);41        $this->seekable = $meta['seekable'] && 0 === \fseek($this->stream, 0, \SEEK_CUR);42        $this->readable = isset(self::READ_WRITE_HASH['read'][$meta['mode']]);43        $this->writable = isset(self::READ_WRITE_HASH['write'][$meta['mode']]);44    }45    /**46     * Creates a new PSR-7 stream.47     *48     * @param string|resource|StreamInterface $body49     *50     * @throws \InvalidArgumentException51     */52    public static function create($body = ''): StreamInterface53    {54        if ($body instanceof StreamInterface) {55            return $body;56        }57        if (\is_string($body)) {58            if (200000 <= \strlen($body)) {59                $body = self::openZvalStream($body);60            } else {61                $resource = \fopen('php://memory', 'r+');62                \fwrite($resource, $body);63                \fseek($resource, 0);64                $body = $resource;65            }66        }67        if (!\is_resource($body)) {68            throw new \InvalidArgumentException('First argument to Stream::create() must be a string, resource or StreamInterface');69        }70        return new self($body);71    }72    /**73     * Closes the stream when the destructed.74     */75    public function __destruct()76    {77        $this->close();78    }79    public function close(): void80    {81        if (isset($this->stream)) {82            if (\is_resource($this->stream)) {83                \fclose($this->stream);84            }85            $this->detach();86        }87    }88    public function detach()89    {90        if (!isset($this->stream)) {91            return null;92        }93        $result = $this->stream;