<!DOCTYPE html>
<html>
<body>
<h1> This is my first calculator>
<form method="post">
1st<input type="number" name="x"><br>
2nd<input type="number" name="y"><br>
<button type="submit" name="submit1" value="submit">addition</button>
<button type="submit" name="submit2" value="submit">minus</button>
<button type="submit" name="submit3" value="submit">multiply</button>
<button type="submit" name="submit4" value="submit">devide</button>
</form>
</body>
</html>
<?php
if (isset($_POST['submit1'])) {
$x = $_POST['x'];
$y = $_POST['y'];
echo $x + $y;
}
if (isset($_POST['submit2'])) {
$x = $_POST['x'];
$y = $_POST['y'];
echo $x - $y;
}
if (isset($_POST['submit3'])) {
$x = $_POST['x'];
$y = $_POST['y'];
echo $x * $y;
}
if (isset($_POST['submit4'])) {
$x = $_POST['x'];
$y = $_POST['y'];
echo $x / $y;
}
?>
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