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caclulator.php
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caclulator.php
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Calculations</title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css">
</head>
<body>
<script src="assets/jquery-3.2.1.js"></script>
<script src="assets/js/bootstrap.min.js"></script>
<form action="#" method="post" name="calculator">
<input type="text" placeholder="первое число" required name=first><br>
<input type="text" placeholder="второе число" required name=second><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="+">
+
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="-">
-
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="*">
*
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="/">
/
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="%">
% (mod)
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="x^2+y^2">
squares
</label><br>
<label class="radio">
<input type="radio" name="optionsRadios" value="x^3+y^3">
cubes
</label><br>
<div class="form-actions">
<input type="submit" value=" = " name="go" class="btn btn-primary">
<input type="reset" value="Сброс" name="Сброс" class="btn">
</div>
</form>
<?php
if (isset($_POST['go']))
{
if (($_POST['first'] !== '') && ($_POST['second'] !== '') && ($_POST['optionsRadios']))
{
$act = $_POST['optionsRadios'];
$first = $_POST['first'];
$second = $_POST['second'];
function plus($a, $b)
{
return $a + $b;
}
function minus($a, $b)
{
return $a - $b;
}
function mul($a, $b)
{
return $a * $b;
}
function div($a, $b)
{
return $a / $b;
}
function div2($a, $b)
{
return $a % $b;
}
function squares($a, $b)
{
return $a*$a + $b*$b;
}
function cubes($a, $b)
{
return $a*$a*$a + $b*$b*$b;
}
switch ($act)
{
case '+':
// echo $first+$second;
echo plus($first,$second);
break;
case '-':
// echo $first-$second;
echo minus($first, $second);
break;
case '*':
// echo $first*$second;
echo mul($first, $second);
break;
case '/':
if($first !=0)
{
// echo $first/$second;
echo div($first, $second);
}
elseif ($second == 0)
echo 'division by zero.<br>';
break;
case '%':
if ($second != 0)
// echo $first % $second;
echo div2($first, $second);
elseif ($second == 0)
echo 'division by zero.<br>';
break;
case 'x^2+y^2':
// echo $first*$second;
echo squares($first, $second);
break;
case 'x^3+y^3':
// echo $first*$first*$first + $second*$second*$second;
echo cubes($first, $second);
break;
default: echo 'Other.<br>';
}
}
else echo 'не выбрано действие';
}
?>
</body>
</html>