What are the requirements for extending a tourist visa in Thailand for Philippine passport holders?

A Philippine passport holder, who arrived in Thailand as a tourist and is looking to extend their visa for another 30 days, should visit their local immigration office. In Phuket, there are two immigration offices, which may have slightly different requirements for documentation, including the TM.30 form. Commonly required documents include a passport photo, a copy of the current visa, immigration card, and a copy of the passport page. The fee for the extension is typically around 1,900 baht, and it can often be processed quickly, usually within 30 minutes.