Do you mean specifically the fighter class, or more generic? For a Fighter, dex-based is doomed to suck. I am currently playing a Vivisectionist Beastmorph Alchemist, however, and he kicks ass quite well. He's a goblin, has dex 24 at level 6 currently, and has an Agile amulet of mighty fists, weapon finesse, and feral mutagen (and a gauntlet for when mutagen is off).Haramaki armor and/or mage armor buff help provide with an armor bonus w/o capping max dex. Even so, if it were not for his spare tentacle holding a darkwood heavy shield and the mutagen itself giving nat armor bonus, his AC wouldn't be much different than a str-based guy in appropriately big armor. His damage is poorer, but with sneak attack, that matters less, and as a stealthy type class (got stealth and acrobatics as class skills via traits, though the latter is hopeless for tumbling, mostly just use it to power Roll With It feat), the high dex is very nice.
Dex-based Magus w/ Dervish Dance and Dawnflower Dervish Bard (who gets Dervish Dance as a bonus feat) are the other builds where a high dex warrior can do well enough in PF.
I see a lot of people try to make a dex-based maneuver expert out of Lore Warden Fighter, but that just doesn't work. The ONLY finessable reach weapon in all of PF is the whip, and that takes 3 feats to unlock and even then it's a woefully subpar weapon. Then add in the fact you can't use many maneuvers (including trip, the best one) on foes more than 1 size larger, and that enlarge person is pretty bad for you and...it sounds nice, but don't do it.
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