Slip 1 - A) Write a PHP script to create a simple calculator that can accept two numbers and perform operations like add, subtract, multiplication. (Use the concept of Class)

 Solution:

<?php

class MyCalculator {

private $_fval, $_sval;

public function __construct( $fval, $sval ) {

$this->_fval = $fval;

$this->_sval = $sval;

}

public function add() {

return $this->_fval + $this->_sval;

}

public function subtract() {

return $this->_fval - $this->_sval;

}

public function multiply() {

return $this->_fval * $this->_sval;

}

public function divide() {

return $this->_fval / $this->_sval;

}

}

$mycalc = new MyCalculator(12, 6); 

echo $mycalc-> add()."\n"; // Displays 18 

echo $mycalc-> multiply()."\n"; // Displays 72

echo $mycalc-> subtract()."\n"; // Displays 6

echo $mycalc-> divide()."\n"; // Displays 2

?>