Php/docs/function.stream-copy-to-stream
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 $offset = 0
]] ) : int|false
Makes a copy of up to maxlength bytes
of data from the current position (or from the
offset position, if specified) in
source to dest. If
maxlength is not specified, all remaining content in
source will be copied.
参数
source- The source stream
dest- The destination stream
maxlength- Maximum bytes to copy
offset- The offset where to start to copy data
返回值
Returns the total count of bytes copied, 或者在失败时返回 false.
范例
Example #1 A stream_copy_to_stream() example
<?php$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";?>
