[Typo3] passing page uid to a php script

[Andy Pailthorpe]

Does anyone know how to pass the page uid,title, and alias to one of my own
php scripts.  It seems like a simple thing but i cant seem to get it to
work.  This is the typoscript i've tried:

lib.simpleLog = USER
lib.simpleLog.userFunc = user_log->log
lib.simpleLog {

  uid = field:uid

}

thanks for your help.