if $a = 3 and $b = 100 so i can get how many has been minused from $b=100 in $c variable (eg.$c = 3) in php.? : <p>if $a = 3 and $b = 100 so i can get how many has been minused from $b=100 in $c variable (eg.$c = 3) in php.?
I just need minused number from the addition of two variable 3 and 100
answer should be 3 in my third variable.  </p>
