SSH2 Auth Pubkey assistance

[jamgam]

I've got a little php script here at work that used to log into a SSH server and grab some log files and show them in a web browser.  Simple stuff.  Recently we've changed the login on the servers to use our VPN tokens instead of a password that I pick for my account.  We can use authorized keys which works fine for me in putty and I'm trying to set that up because I keep getting prompted for user and password the "old" way.

 

I'm using ssh2_auth_pubkey_file and been reading the manual about it but I can't seem to get it to work

 

I make my connection as follows

 

 

$connection = ssh2_connect($serverHost, 22, array('hostkey'=>'ssh-rsa'));

 

Then setup the auth_pubkey.  There is no passphrase or anything I use with putty so i left that part out

 

 

$result = ssh2_auth_pubkey_file($connection, 'username','/path/to/id_rsa.pub','/path/to/id_rsa');

 

the information in my id_rsa.pub file matches what's in authorized_keys on the server in my username/.ssh dir

 

I'm not 100% what else to check for?  Anyone have any tips

Thanks