PHP Programs MySQL to PostgreSQL Conversion

I need 4 PHP programs converted from using MySQL to PostgreSQL. There are small variations in table names and columns.

Details:
- No data migration is needed, only the structure.
- I have full details on the variations in table names and columns.
- I require optimization for queries in the new PostgreSQL environment.

Ideal skills for this project include:
- Proficiency in PHP and PostgreSQL
- Experience with database migration and optimization
- Attention to detail and ability to work with predefined specifications.