Yes.
<input type="text" name="t[]">
<input type="text" name="t[]">
<input type="text" name="t[]">
That will create t[0],t[1],t[2] automagically OR you can define them :
<input type="text" name="t[sup]">
<input type="text" name="t[bla]">
<input type="text" name="t[foo]">