PHP ssh2_scp_send file permissions

I am using the PHP function ssh2_scp_send to transfer files from one server to another. The interesting things is that if I write the permission in it's octal开发者_StackOverflow中文版 form (ie 0644) directly everything works fine. If I instead enclose this in inverted commas or use a variabel this does not work any more.

To be clearer: This works: ssh2_scp_send($conn, $localFile, $remoteFile, 0644);

Does NOT work: ssh2_scp_send($conn, $localFile, $remoteFile, "0644");

Does NOT work: $permission=0644;ssh2_scp_send($conn, $localFile, $remoteFile, $permission);

Anybody has any idea why this is the case?

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Give decoct() a chance. I'm not sure this will work, but you can try. One more thing you can try is to store permissions values into constants with define()

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The string may be interpreted as decimal.

Also, what type is $permission? Try using var_dump() on it. It may be a string too.

$a = 0644;

$b = (int) "0644";

var_dump($a, $b); // int(420), int(644)

See it on codepad.org