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stream_set_write_buffer

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

stream_set_write_buffer — Sets write file buffering on the given stream

Description

stream_set_write_buffer(resource $stream, int $size): int

Sets the buffering for write operations on the given stream to size bytes.

Parameters

stream

The file pointer.

size

The number of bytes to buffer. If size is 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.

Return Values

Returns 0 on success, or another value if the request cannot be honored.

Examples

Example #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 ($fp) {
if (stream_set_write_buffer($fp, 0) !== 0) {
// changing the buffering failed
}
fwrite($fp, $output);
fclose($fp);
}
?>

See Also