Trying to use stream_set_write_buffer on a local file will always fail according to this note from 2003.
http://grokbase.com/t/php/php-internals/0351gp6xtn/stream-set-write-buffer-does-not-work
Example:
$fp = fopen("localfile.txt", "w");
if (stream_set_write_buffer($fp, 0) !== 0) {
// changing the buffering failed is always true on local files
}
stream_set_write_buffer
(PHP 4 >= 4.3.0, PHP 5)
stream_set_write_buffer — Sets write file buffering on the given stream
Beskrivelse
int stream_set_write_buffer
( resource
$stream
, int $buffer
)
Sets the buffering for write operations on the given stream
to buffer bytes.
Output using fwrite() is normally buffered at 8K. This means that if there are two processes wanting to write to the same output stream (a file), each is paused after 8K of data to allow the other to write.
Parametre
-
stream -
The file pointer.
-
buffer -
The number of bytes to buffer. If
bufferis 0 then write operations are unbuffered. This ensures that all writes with fwrite() are completed before other processes are allowed to write to that output stream.
Returnerings Værdier
Returns 0 on success, or EOF if the request cannot be honored.
Eksempler
Eksempel #1 stream_set_write_buffer() example
The following example demonstrates how to use stream_set_write_buffer() to create an unbuffered stream.
<?php
$fp = fopen($file, "w");
if ($fp) {
stream_set_write_buffer($fp, 0);
fwrite($fp, $output);
fclose($fp);
}
?>
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User Contributed Notes 1 note
kevin at bonnevillessei dot com ¶
5 years ago
