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<?php
namespace Psr\Http\Message;
interface StreamFactoryInterface
{
/**
* Create a new stream from a string.
*
* The stream SHOULD be created with a temporary resource.
*
* @param string $content String content with which to populate the stream.
*
* @return StreamInterface
*/
public function createStream(string $content = ''): StreamInterface;
/**
* Create a stream from an existing file.
*
* The file MUST be opened using the given mode, which may be any mode
* supported by the `fopen` function.
*
* The `$filename` MAY be any string supported by `fopen()`.
*
* @param string $filename Filename or stream URI to use as basis of stream.
* @param string $mode Mode with which to open the underlying filename/stream.
*
* @return StreamInterface
* @throws \RuntimeException If the file cannot be opened.
* @throws \InvalidArgumentException If the mode is invalid.
*/
public function createStreamFromFile(string $filename, string $mode = 'r'): StreamInterface;
/**
* Create a new stream from an existing resource.
*
* The stream MUST be readable and may be writable.
*
* @param resource $resource PHP resource to use as basis of stream.
*
* @return StreamInterface
*/
public function createStreamFromResource($resource): StreamInterface;
}
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