Re: Hoping for a working example of SFTP in PHP

I found a discussion of changing the format of the public key at 
https://blog.oddbit.com/post/2011-05-08-converting-openssh-public-keys/.

So I used

ssh-keygen -f w.pub -e -m pem

to get a "BEGIN RSA PUBLIC KEY" file from the "ssh-rsa" file.

My program still fails with the same error message.

I also tried reading the key files into strings:

$wpub=file_get_contents("w.pub");
$wkey=file_get_contents("w.key");
if (ssh2_auth_pubkey_file($connection, $user, $wpub, $wkey, $passphrase)) {

And this, too, failed with the same error message.

Why can't ssh2_auth_pubkey_file give more details in its error message?

I'm again running out of free time. Any experts out there?