Calculation Form
Value 1:
Value 2:
Calculation:
Add
Subtract
Multiply
Divide
File: calc.php
Calculation Result
$val1 = $_POST['val1'];
$val2 = $_POST['val2'];
$calc = $_POST['calc'];
if( is_numeric( $val1 ) && is_numeric( $val2 ) )
{
if( $calc != null )
{
switch( $calc )
{
case "add" : $result = $val1 + $val2; break;
case "sub" : $result = $val1 - $val2; break;
case "mul" : $result = $val1 * $val2; break;
case "div" : $result = $val1 / $val2; break;
}
echo( "Calculation result: $result" );
}
}
else
{
echo( "Invalid entry - please retry" );
}
?>