stream_copy_to_stream
(PHP 5, PHP 7)
stream_copy_to_stream — Copies data from one stream to another
说明
stream_copy_to_stream
( resource
$source
, resource $dest
[, int $maxlength = -1
[, int $offset = 0
]] ) : int
Makes a copy of up to maxlength bytes
of data from the current position (or from the
offset position, if specified) in
source to dest. If
maxlength is not specified, all remaining content in
source will be copied.
参数
-
source -
The source stream
-
dest -
The destination stream
-
maxlength -
Maximum bytes to copy
-
offset -
The offset where to start to copy data
返回值
Returns the total count of bytes copied, 或者在失败时返回 FALSE.
更新日志
| 版本 | 说明 |
|---|---|
| 5.1.0 |
Added the offset parameter
|
范例
Example #1 A stream_copy_to_stream() example
<?php
$src = fopen('http://www.example.com', 'r');
$dest1 = fopen('first1k.txt', 'w');
$dest2 = fopen('remainder.txt', 'w');
echo stream_copy_to_stream($src, $dest1, 1024) . " bytes copied to first1k.txt\n";
echo stream_copy_to_stream($src, $dest2) . " bytes copied to remainder.txt\n";
?>