Stream Functions
PHP Manual

stream_set_write_buffer

Sets write file buffering on the given stream

Description

int stream_set_write_buffer ( resource $stream , int $buffer )

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

Parameters

stream

The file pointer.

buffer

The number of bytes to buffer. If buffer 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

  • fopen
  • fwrite