Can I charger my iPhone without a charger?

So I have an iPhone 3g and an iPhone 4 that are both completely dead and both the chargers are broken its late at night so I can't go but another is there any way I can charger either of them with out my charger?

Yes
if you get a small piece of wood about the same size of your phone and place it in direct light (like a lamp) and put just a few grains of salt on the screen.
hope it helped.

Not yet.

You can use pc through usb

No you need a working charger to charge it.