Topic: [TUTORIAL] How to make a simple calculator
Hello,
In this tutorial you will learn how to make a simple PHP calculator
<?php
if($submit)
{
if($operator == '*')
{
echo $numa * $numb;
} elseif($operator == '/')
{
echo $numa / $numb;
} elseif($operator == '+')
{
echo $numa + $numb;
} elseif($operator == '-')
{
echo $numa - $numb;
}
} else { ?>
<form method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
<input type="text" name="numa" size="10">
<select name="operator">
<option value="+">Add</option>
<option value="-">Subtract</option>
<option value="*">Multiply</option>
<option value="/">Divide</option>
</select>
<input type="text" name="numb" size="10">
<input type="submit" value="Calculate" name="submit">
</form>
<?php } ?>
Read more: http://www.webdesign.org/web/web-programming/php/php-calculator.10025.html#ixzz0TUVwwSds