streamWrapper::stream_read
Read from stream
Description
public stringfalse streamWrapper::stream_read(int $count)
Note:
Remember to update the read/write position of the stream (by the number of
bytes that were successfully read).
Parameters
-
count
-
How many bytes of data from the current position should be returned.
Return Values
If there are less than count
bytes available, as many as are available should be returned.
If no more data is available, an empty string should be returned.
To signal that reading failed, false should be returned.
Errors/Exceptions
Emits
E_WARNING if call to this method fails
(i.e. not implemented).
Note:
If the return value is longer then count an
E_WARNING error will be emitted, and excess data will be
lost.
Notes
Note:
streamWrapper::stream_eof is called directly after
calling streamWrapper::stream_read to check if
EOF has been reached. If not implemented,
EOF is assumed.
Warning
When reading the whole file (for example, with
file_get_contents), PHP will call
streamWrapper::stream_read followed by
streamWrapper::stream_eof in a loop but as long
as streamWrapper::stream_read returns a
non-empty string, the return value of
streamWrapper::stream_eof is ignored.