I found this on the LTO website:
7. I’m currently out of the country and I would like to request for copies of my driver’s license records in the Philippines. How can I obtain this?
With reference to your query, hereunder is the requirements & procedures to wit:
7.1. The authorized representative here in the Philippines may file your written request at LTO, License Section, W -10, East Avenue, QC;
7.2. Certification Fee is P100.00;
7.3. State your purpose;
7.4. For easy reference, please include in your request complete name, birthday, and driver’s license no., if available.
7.5. Certification is being issued by mail or through representative (due to issuance of Official Receipts and use of Security papers for authentication purposes).