\GuzzleHttp\Psr7PumpStream

Provides a read only stream that pumps data from a PHP callable.

When invoking the provided callable, the PumpStream will pass the amount of data requested to read to the callable. The callable can choose to ignore this value and return fewer or more bytes than requested. Any extra data returned by the provided callable is buffered internally until drained using the read() function of the PumpStream. The provided callable MUST return false when there is no more data to read.

Summary

Methods
Properties
Constants
__construct()
__toString()
close()
detach()
getSize()
tell()
eof()
isSeekable()
rewind()
seek()
isWritable()
write()
isReadable()
read()
getContents()
getMetadata()
No public properties found
No constants found
No protected methods found
No protected properties found
N/A
pump()
$source
$size
$tellPos
$metadata
$buffer
N/A

Properties

$source

$source : callable

Type

callable

$size

$size : integer

Type

integer

$tellPos

$tellPos : integer

Type

integer

$metadata

$metadata : array

Type

array

Methods

__construct()

__construct(callable  $source, array  $options = array()) 

Parameters

callable $source

Source of the stream data. The callable MAY accept an integer argument used to control the amount of data to return. The callable MUST return a string when called, or false on error or EOF.

array $options

Stream options:

  • metadata: Hash of metadata to use with stream.
  • size: Size of the stream, if known.

__toString()

__toString() : string

Reads all data from the stream into a string, from the beginning to end.

This method MUST attempt to seek to the beginning of the stream before reading data and read the stream until the end is reached.

Warning: This could attempt to load a large amount of data into memory.

This method MUST NOT raise an exception in order to conform with PHP's string casting operations.

Returns

string

close()

close() : void

Closes the stream and any underlying resources.

detach()

detach() : resource|null

Separates any underlying resources from the stream.

After the stream has been detached, the stream is in an unusable state.

Returns

resource|null —

Underlying PHP stream, if any

getSize()

getSize() : integer|null

Get the size of the stream if known.

Returns

integer|null —

Returns the size in bytes if known, or null if unknown.

tell()

tell() : integer

Returns the current position of the file read/write pointer

Returns

integer —

Position of the file pointer

eof()

eof() : boolean

Returns true if the stream is at the end of the stream.

Returns

boolean

isSeekable()

isSeekable() : boolean

Returns whether or not the stream is seekable.

Returns

boolean

rewind()

rewind() 

Seek to the beginning of the stream.

If the stream is not seekable, this method will raise an exception; otherwise, it will perform a seek(0).

seek()

seek(integer  $offset, integer  $whence = SEEK_SET) 

Seek to a position in the stream.

Parameters

integer $offset

Stream offset

integer $whence

Specifies how the cursor position will be calculated based on the seek offset. Valid values are identical to the built-in PHP $whence values for fseek(). SEEK_SET: Set position equal to offset bytes SEEK_CUR: Set position to current location plus offset SEEK_END: Set position to end-of-stream plus offset.

isWritable()

isWritable() : boolean

Returns whether or not the stream is writable.

Returns

boolean

write()

write(string  $string) : integer

Write data to the stream.

Parameters

string $string

The string that is to be written.

Returns

integer —

Returns the number of bytes written to the stream.

isReadable()

isReadable() : boolean

Returns whether or not the stream is readable.

Returns

boolean

read()

read(integer  $length) : string

Read data from the stream.

Parameters

integer $length

Read up to $length bytes from the object and return them. Fewer than $length bytes may be returned if underlying stream call returns fewer bytes.

Returns

string —

Returns the data read from the stream, or an empty string if no bytes are available.

getContents()

getContents() : string

Returns the remaining contents in a string

Returns

string

getMetadata()

getMetadata(string  $key = null) : array|mixed|null

Get stream metadata as an associative array or retrieve a specific key.

The keys returned are identical to the keys returned from PHP's stream_get_meta_data() function.

Parameters

string $key

Specific metadata to retrieve.

Returns

array|mixed|null —

Returns an associative array if no key is provided. Returns a specific key value if a key is provided and the value is found, or null if the key is not found.

pump()

pump(  $length) 

Parameters

$length