  We analyze near-threshold cross section data for the reaction pp->pp phi
published by the DISTO collaboration and recent, still preliminary results
presented by the ANKE Collaboration. We formulate a procedure to evaluate the
OZI ratio at low energies by taking into account corrections from the
kinematics and the final-state interaction. Combining the new data with the few
measurements available at higher energies we give a limit for the OZI rule
violation and estimate the possible contribution from a five-quark baryonic
resonance coupled to the phi-p system.
