Simple implementation of addition, subtraction, multiplication and division calculator using PHP_PHP tutorial

Use php to implement addition, subtraction, multiplication and division calculator. The code is very simple!

Copy code The code is as follows:

header("content-type:text/html; charset=utf-8");
session_start();
?>

No. A number

Calculation symbol
+
-
*
/


Second number

$num1=$_POST['num1'];
$num2=$_POST['num2'];
$oper=$_POST['oper'];
$rs=0;
switch($oper){
case "+":
$rs=$num1+$num2;
break;
case "-":
$rs=$num1-$num2;
break;
case "*":
$rs=$num1*$num2;
break;
case "/":
$rs=$num1/$num2;
break;
default: echo "Your input is incorrect";
}
$_SESSION['rs']=$rs;
echo 'The calculation result is:'.$_SESSION['rs'];
?>

http://www.bkjia.com/PHPjc/676921.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/676921.htmlTechArticleUse PHP to implement addition, subtraction, multiplication and division calculator. The code is very simple! Copy the code as follows: ?php header("content-type:text/html;charset=utf-8"); session_start(); ? !DOCTYPE html PUBLIC "-/...