As a general rule, you can use your overseas driving license in Australia for up to 3 months.. after that you need to apply a permanent one..
Unfortunately, a Ph driver's license cannot be converted
Here is the information from the department of transport (WA).. I would assume the same rule applies to other states:
If you hold a driver's licence from a ‘recognised country’ and the licence has not expired by more than 12 months, when applying for a WA licence:
 
<b>Recognised countries:    </b>
 
Austria  Guernsey  New Zealand
  
Belgium  Ireland  Norway
  
Canada  Isle of Man*  Portugal
  
Croatia  Italy  Singapore
  
Denmark  Japan  Spain
  
Finland  Jersey  Sweden
  
France  Luxembourg  Switzerland
  
Germany  Malta **  United Kingdom
  
Greece  Netherlands  United States of America