php multiple if conditions

Question

when i try to filter all these parameters php only enters in the first if conditions, ignoring all others conditions.

if($t_red<0){
    $t_red=0;
}

else if($         


        

Answer 1

It's not clear what you're trying to do, but I think that you would want to remove the else before the third if statement and add an else before the sixth if statement.