Adding using HTML forms and PHP
<?php
// Get data from HTML form.
$addScore1 = $_POST['addScore1'];
$addScore2 = $_POST['addScore2'];
$oldScore1 = $_POST['oldScore1'];
$oldScore2 = $_POST['oldScore2'];
$newScore1 = (int) $oldScore1 + (int) $addScore1;
$newScore2 = (int) $oldScore2 + (int) $addScore2;
?>
<h2>Old Sores</h2>
<p>
<input type="text" value="<?=$oldScore1?>">
<input type="text" value="<?=$oldScore2?>">
</p>
<h2>New Sores</h2>
<p>
<input type="text" value="<?=$newScore1 ?>">
<input type="text" value="<?=$newScore1 ?>">
</p>
Is this what you need?
UPDATE:
Try this code:
Just tested it works as a calculator :) Hope thats what you need.
<?php
// Get data from HTML form.
$addScore1 = (int) $_POST['addScore1'];
$addScore2 = (int) $_POST['addScore2'];
$oldScore1 = (int) $_POST['newScore1'];
$oldScore2 = (int) $_POST['newScore2'];
$newScore1 = (int) $oldScore1 + (int) $addScore1;
$newScore2 = (int) $oldScore2 + (int) $addScore2;
?>
<html>
<head>
<title>Score Add</title>
</head>
<body>
<form method="post" action="">
<h2>Old Scores</h2>
<p>
<input type="text" value="<?=$oldScore1?>">
<input type="text" value="<?=$oldScore2?>">
</p>
<h2>New Scores</h2>
<p>
<input type="text" value="<?=$newScore1 ?>">
<input type="text" value="<?=$newScore2 ?>">
</p>
<h2>Add Scores</h2>
<p>
<input type="text" value="">
<input type="text" value="">
</p>
<input type="submit" />
</form>
</body>
</html>
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