How get connect to youtube account with zend framework and youtube api?

I need connect to youtube account with zend framework and youtube api 2.0.
My referenece http://code.google.com/intl/en/apis/youtube/2.0/developers_guide_php.html
but i now get error message :
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /var/www/virtual/lohaa.de/htdocs/youtube/Zend/Loader.php on line 52

Anybody have solution to get connect to youtube account?