'protocol://databaseName.fileCollectionPrefix?file_attribute=value'

$resource = fopen('gridfs://mydatabase.fs?filename=new_file.txt', 'w');
fwrite($resource, 'some content');
// ...
fclose($resource);

$resource = fopen('gridfs://mydatabase.fs?filename=my_file.txt', 'r');
$fileContent = stream_get_contents($resource);

public resource $context = null

public array getContextOptions ( )

getContextOptions() public method

Returns options associated with $context.

public array getContextOptions ( )
return	array	Context options.

register() public static method

Registers this steam wrapper.

public static void register ( $protocol = 'gridfs', $force = false )
$protocol	string	Name of the protocol to be used.
$force	boolean	Whether to register wrapper, even if protocol is already taken.

stream_close() public method

Closes a resource.

This method is called in response to fclose().

See also \yii\mongodb\file\fclose().

public void stream_close ( )

stream_eof() public method

Tests for end-of-file on a file pointer.

This method is called in response to feof().

See also \yii\mongodb\file\feof().

public boolean stream_eof ( )
return	boolean	true if the read/write position is at the end of the stream and if no more data is available to be read, or false otherwise.

stream_flush() public method

This method is called in response to fflush() and when the stream is being closed while any unflushed data has been written to it before.

See also \yii\mongodb\file\fflush().

public boolean stream_flush ( )
return	boolean	Whether cached data was successfully stored.

stream_open() public method

Opens file.

This method is called immediately after the wrapper is initialized (f.e. by fopen() and file_get_contents()).

See also \yii\mongodb\file\fopen().

public boolean stream_open ( $path, $mode, $options, &$openedPath )
$path	string	Specifies the URL that was passed to the original function.
$mode	string	Mode used to open the file, as detailed for fopen().
$options	integer	Additional flags set by the streams API.
$openedPath	string	Real opened path.
return	boolean	Whether operation is successful.

stream_read() public method

Reads from stream.

This method is called in response to fread() and fgets().

See also \yii\mongodb\file\fread().

public string|false stream_read ( $count )
$count	integer	Count of bytes of data from the current position should be returned.
return	string|false	If there are less than count bytes available, return as many as are available. If no more data is available, return false.

stream_seek() public method

Seeks to specific location in a stream.

This method is called in response to fseek().

See also \yii\mongodb\file\fseek().

public boolean stream_seek ( $offset, $whence = SEEK_SET )
$offset	integer	The stream offset to seek to.
$whence	integer	Possible values: SEEK_SET - Set position equal to offset bytes. SEEK_CUR - Set position to current location plus offset. SEEK_END - Set position to end-of-file plus offset.
return	boolean	Return true if the position was updated, false otherwise.

stream_stat() public method

Retrieve information about a file resource.

This method is called in response to stat().

See also \yii\mongodb\file\stat().

public array stream_stat ( )
return	array	File statistic information.

stream_tell() public method

Retrieve the current position of a stream.

This method is called in response to fseek() to determine the current position.

See also \yii\mongodb\file\fseek().

public integer stream_tell ( )
return	integer	Should return the current position of the stream.

stream_write() public method

Writes to stream.

This method is called in response to fwrite().

See also \yii\mongodb\file\fwrite().

public integer stream_write ( $data )
$data	string	String to be stored into the underlying stream.
return	integer	The number of bytes that were successfully stored.