Password Change with PHP

Hi, My workplace is deploying a groupware system which, unfortunately, doesn't integrate with LDAP for authentication.* One of my coworkers is writing a web application to automate changing passwords in both OD and the groupware. Is there a way to do this with using PHP's ldap functions (http://php.net/ldap) ? I know that in a normal OpenLDAP implementation we would be able to do this by changing an attribute (eg- http://logout.sh/computers/ldap/); will this work with OD and the Password Server? Thanks.