醴翹 Stream open options Affects the operation of stream factory functions

Stream Classes

Stream Errors

Stream open options

蛁 If you need to seek and write to the stream, it does not make sense to use this function, because the stream it returns is not guaranteed to be bound to the same resource as the original stream.

Closes the given mcal stream.

Original stream was not seekable and has been released. newstream is set to the new seekable stream. You should not access origstream anymore.

persistent is a flag the controls whether the stream is opened as a persistent stream. Generally speaking, this parameter will usually be 0.

The is particularly useful when accessing HTTP URLs where the start of the actual stream data is found after an indeterminate offset into the stream.

Returns an array of options on the specified stream or context.

瞰赽 1. Filter for ROT13 encoding data on foo bar.txt stream

The internal position of the stream is advanced by 1 if successful.

With mcal support, a calendar stream can be opened much like the mailbox stream with the IMAP support. Calendars can be local file stores, remote ICAP servers, or other formats that are supported by the mcal library.

Creates and returns a stream context with any parameters supplied in params preset.

瞰赽 43 1. simple stream example that displays the PHP home page

Original stream was seekable anyway. newstream is set to the value of origstream.

瞰赽 1. Creating a new GD image stream and outputting an image.

Sets the file position indicator for fp to the beginning of the file stream.

Sets the timeout value on stream, expressed in the sum of seconds and microseconds.

Sets the file position indicator for zp to the beginning of the file stream.

Name of user defined callback function to be called whenever a stream triggers a notification.

Open text file for reading. The stream is positioned at the beginning of the file.

Returns an indexed array containing the name of all stream filters available on the running system.

Returns an indexed array containing the name of all stream wrappers available on the running system.

This function reopens the specified stream to a new mailbox on an IMAP or NNTP server.

蛁 Be aware that some stream implementations need to be handled very carefully. A few basic rules

Open text file for reading and writing. The stream is positioned at the beginning of the file.

Returns the position of the file pointer referenced by fp i.e., its offset into the file stream.

Returns the position of the file pointer referenced by zp i.e., its offset into the file stream.

mode specifies the type of access you require to the stream. It may be any of the following

This function returns TRUE if the algorithm is a block algorithm, or FALSE if it is a stream algorithm.

蛁 Although this function will not perform the conversion, some internal stream state might be changed by this call.

Since this option disables buffering at the streams API level, you may experience lower performance when using streams functions on the stream this is deemed acceptable because you have told streams that you will be using the functions to match the underlying stream implementation. Only use this option when you are sure you need it.

Truncate the file to zero length or create text file for writing. The stream is positioned at the beginning of the file.

Open for writing. The file is created if it does not exist. The stream is positioned at the end of the file.

The internal position of the stream is advanced by the number of bytes that were read, so that subsequent reads will continue reading from that point.

The internal position of the stream is advanced by the number of bytes that were written, so that subsequent writes will continue writing from that point.

Open text file for reading and writing. The file is created if it does not exist, otherwise it is truncated. The stream is positioned at the beginning of the file.

Returns an array of ID's that are between the start and end dates, or if just a stream is given, uses the start and end dates in the global event structure.

Returns an IMAP stream on success and FALSE on error. This function can also be used to open streams to POP3 and NNTP servers, but some functions and features are only available on IMAP servers.

Returns an array of event ID's that has an alarm going off between the start and end dates, or if just a stream is given, uses the start and end dates in the global event structure.

Most of the functions use an internal event structure that is unique for each stream. This alleviates the need to pass around large objects between functions. There are convenience functions for setting, initializing, and retrieving the event structure values.

蛁 NEVER call this function with an origstream that is reference by a file pointer in a PHP script! This function may cause the underlying stream to be closed which could cause a crash when the script next accesses the file pointer!

If not NULL, timeout specifies a maximum time to allow for the connection to be made. If the connection attempt takes longer than the timeout value, the connection attempt is aborted and NULL is returned to indicate that the stream could not be opened.

This function returns the size of the iv of the algorithm specified by the encryption descriptor in bytes. If it returns '0' then the IV is ignored in the algorithm. An IV is used in cbc, cfb and ofb modes, and in some algorithms in stream mode.