Can someone give me sample php code on a given problems below?

Question

Using MS Access
if bill is less than 100 no tax
if bill is 101 or less than 200 tax = 1.65
if bill is 201 or less than 300 tax = 2.65
Using PHP mysql
if bill is less than 100 no tax
if bill is 101 or less than 200 tax = 1.65
if bill is 201 or less than 300 tax = 2.65

Answer 1

/*
* This is PHP code that does some of what is asked...
* MS-Access left as an exercise for
* the student.
*/
function get_tax( $bill ) {
if ($bill < 100 ) {
return 0;
} else if ($bill >= 100 && $bill < 200 ) {
return 1.65;
} else if ($bill >= 200 && $bill < 200 ) {
return 2.65;
}
}