Description:
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I'm using the ssh2 Extension (1.0) together with PHP 7 to work on SSH enabled servers.
When trying to read a directory on the SSH2 via the ssh2.sftp:// wrapper, I've got the following error under 7.0.13:

PHP Warning:  opendir(ssh2.sftp://Resource id #49/test): failed to open dir: operation failed

Using exactly the same code with the same ssh2 extension under PHP 7.0.12 everything works as expected.




Test script:
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$dirname  = sprintf("ssh2.sftp://%s%s",$this->SFTP,"/test");
$handle   = opendir($dirname);




Expected result:
----------------
Getting a directory handle ready to traverse the entries with readdir().

Actual result:
--------------
$handle is boolean(false) instead of directory handle, and this warning is printed:

PHP Warning:  opendir(ssh2.sftp://Resource id #7/ivz-export/test/): failed to open dir: operation failed in ivz_sftp2.class.php on line 98