I can give that a shot. Manually building PHP with --with-curl=/usr/bin also worked for me. Thanks for your help, Chad!

Yes, that is correct. I did php -i, searched for "curl" and came up with nothing. I'll try rebuilding my PHP using --with-curl and see if that results in anything better. I'll follow the instructions at http://php.net/manual/en/curl.installation.php and get back to you with my results.