Description:
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When daisy chaining the streams compress.zlib://ftp:// php produces a warning (pasted in the actual result below) when using PHP 5.0.3 on Fedora Core 3

This does not occur when daisy chaining compress.bzip2://ftp:// which seems to send the file across fine.

Note that I can use gzencode and then put the file contents and it works fine, which I can then gunzip perfectly, so it does not appear to be a problem with zlib but something between zlib and ftp daisy chaining???

Reproduce code:
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$buffer = "blah blah blah";

file_put_contents("compress.zlib://ftp://user:password@domain.com/file.txt.gz", $buffer);

// to test bzip2 which does work
//file_put_contents('compress.bzip2://ftp://user:password@domain.com/file.txt.gz', $buffer);


Expected result:
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File should write successfully.

Actual result:
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PHP Warning:  file_put_contents(compress.zlib://...@domain.com/file.txt.gz) [<a href='function.file-put-contents'>function.file-put-contents</a>]: failed to open stream: Operation now in progress in /path/to/tmp.php on line 7