stream_copy_to_stream

(PHP 5, PHP 7, PHP 8)

stream_copy_to_streamCopies data from one stream to another

Description

stream_copy_to_stream(
    resource $from,
    resource $to,
    ?int $length = null,
    int $offset = 0
): int|false

Makes a copy of up to length bytes of data from the current position (or from the offset position, if specified) in from to to. If length is null, all remaining content in from will be copied.

Parameters

from

The source stream

to

The destination stream

length

Maximum bytes to copy. By default all bytes left are copied.

offset

The offset where to start to copy data

Return Values

Returns the total count of bytes copied, or false on failure.

Changelog

Version Description
8.0.0 length is now nullable.

Examples

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($src$dest11024) . " bytes copied to first1k.txt\n";
echo 
stream_copy_to_stream($src$dest2) . " bytes copied to remainder.txt\n";

?>

See Also

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