21.
Write
a PHP program for the following create a calculator that can store two values
and perform operations like add, subtract, multiplication and divide (using
Self Processing form)
Php
file :
<html>
<body>
<FORM ACTION="<?php
$_SERVER['PHP_SELF']; ?>" method="POST">
Enter first no :<input
type=text name=no1 ><br>
Enter second no :<input
type=text name=no2><br>
Select Operation which u have to
perform :
<select name=cal>
<option
value="1">Addition</option>
<option
value="2">Substraction</option>
<option
value="3">Multiplication</option>
<option
value="4">Division</option>
</select><br>
<input type=submit name=submit
value=Calculate>
</form>
</body>
</html>
<?php
if(isset($_POST['submit']))
{
$no1=$_POST['no1'];
$no2=$_POST['no2'];
$cal=$_POST['cal'];
if((!empty($no1))
&& (!empty($no2)))
{
switch($cal)
{
case
1:$add=$no1+$no2;
echo
"addition=".$add;
break;
case
2:$sub=$no1-$no2;
echo
"subtraction=".$sub;
break;
case
3:$mult=$no1*$no2;
echo
"multiplication=".$mult;
break;
case
4:$div=$no1/$no2;
echo
"division=".$div;
break;
}
}
else
echo "Please enter both 2 nos";
}
else
die("not
able to acccess");
?>
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