I was married before to an american and got a church wedding here and civilly in the states. I filed for a divorced in the US....after two months with no hassle it was granted. But here in the Philippines after I got my divorce papers I needed to file it here and applied for the nullity of marriage here. So far it took me three years until it was granted
But not too sure about others ok, it depends really where you got married eh...unfortunately with mine was a church wedding back in manila cathedral...so to file nullity of marriage in manila is bit difficult as many are doing it...
Good luck, try to get a good lawyer ok and get a package as it is cheaper