num1 is the first number
";
echo "$this->num2 is the second number
";
echo "
";
}
}
class addCalc extends baseCalc {
function calculate() {
echo "$this->num1 plus $this->num2 equals ".($this->num1 + $this->num2)."
";
}
}
class subCalc extends baseCalc {
function calculate() {
echo "$this->num1 minus $this->num2 equals ".($this->num1 - $this->num2)."
";
}
}
class mulCalc extends baseCalc {
function calculate() {
echo "$this->num1 times $this->num2 equals ".($this->num1 * $this->num2)."
";
}
}
class divCalc extends baseCalc {
function calculate() {
echo "$this->num1 divided by $this->num2 equals ".($this->num1 / $this->num2)."
";
}
}
$object1 = new baseCalc();
$object1 -> calculate();
$object1 = new addCalc();
$object1 -> calculate();
$object1 = new subCalc();
$object1 -> calculate();
$object1 = new mulCalc();
$object1 -> calculate();
$object1 = new divCalc();
$object1 -> calculate();
?>