8  * PHP stream implementation.
10  * @var $stream
12 class Stream implements StreamInterface  class
25     private $stream;  variable in GuzzleHttp\\Psr7\\Stream
36      * - size: (int) If a read stream would otherwise have an indeterminate
40      *   of the stream is accessed.
42      * @param resource $stream  Stream resource to wrap.
45      * @throws \InvalidArgumentException if the stream is not a stream resource
47     public function __construct($stream, $options = [])  argument
49         if (!is_resource($stream)) {
50             throw new \InvalidArgumentException('Stream must be a resource');
61         $this->stream = $stream;
62         $meta = stream_get_meta_data($this->stream);
70      * Closes the stream when the destructed
91         if (!isset($this->stream)) {
92             throw new \RuntimeException('Stream is detached');
95         $contents = stream_get_contents($this->stream);
98             throw new \RuntimeException('Unable to read stream contents');
106         if (isset($this->stream)) {
107             if (is_resource($this->stream)) {
108                 fclose($this->stream);
116         if (!isset($this->stream)) {
120         $result = $this->stream;
121         unset($this->stream);
134         if (!isset($this->stream)) {
138         // Clear the stat cache if the stream has a URI
143         $stats = fstat($this->stream);
169         if (!isset($this->stream)) {
170             throw new \RuntimeException('Stream is detached');
173         return feof($this->stream);
178         if (!isset($this->stream)) {
179             throw new \RuntimeException('Stream is detached');
182         $result = ftell($this->stream);
185             throw new \RuntimeException('Unable to determine stream position');
200         if (!isset($this->stream)) {
201             throw new \RuntimeException('Stream is detached');
204             throw new \RuntimeException('Stream is not seekable');
206         if (fseek($this->stream, $offset, $whence) === -1) {
207             throw new \RuntimeException('Unable to seek to stream position '
214         if (!isset($this->stream)) {
215             throw new \RuntimeException('Stream is detached');
218             throw new \RuntimeException('Cannot read from non-readable stream');
228         $string = fread($this->stream, $length);
230             throw new \RuntimeException('Unable to read from stream');
238         if (!isset($this->stream)) {
239             throw new \RuntimeException('Stream is detached');
242             throw new \RuntimeException('Cannot write to a non-writable stream');
247         $result = fwrite($this->stream, $string);
250             throw new \RuntimeException('Unable to write to stream');
258         if (!isset($this->stream)) {
261             return $this->customMetadata + stream_get_meta_data($this->stream);
266         $meta = stream_get_meta_data($this->stream);