what is diferrent between these 2 ?
look at curly braces.
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>
<body>
<form method="post" action="cal.php">
<fieldset><legend>The Cost</legend>
<table>
<tr><td>quantity</td><td><input type="text" name="quantity" /></td></tr>
<tr><td>price</td><td><input type="text" name="price" /></td></tr>
<tr><td>Tax</td><td><input type="text" name="tax" /></td></tr>
<tr><td colspan="2"><input type="submit" name="submit" /></td></tr>
</table>
<input type="hidden" name="submitted" value="1" />
</fieldset>
</form>
<?php
if(isset($_POST['submitted'])){
if (is_numeric($_POST['quantity']) and is_numeric($_POST['price']) and is_numeric($_POST['tax']))
$total=($_POST['quantity']*$_POST['price']);
$taxrate=( $_POST['tax'] / 100 );
$tax2=($taxrate*$total);
$end=($tax2+$total);echo $end;}
else
echo "!! fill it again";
?>
</body>
</html>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>
<body>
<form method="post" action="cal.php">
<fieldset><legend>The Cost</legend>
<table>
<tr><td>quantity</td><td><input type="text" name="quantity" /></td></tr>
<tr><td>price</td><td><input type="text" name="price" /></td></tr>
<tr><td>Tax</td><td><input type="text" name="tax" /></td></tr>
<tr><td colspan="2"><input type="submit" name="submit" /></td></tr>
</table>
<input type="hidden" name="submitted" value="1" />
</fieldset>
</form>
<?php
if(isset($_POST['submitted']))
if (is_numeric($_POST['quantity']) and is_numeric($_POST['price']) and is_numeric($_POST['tax'])){
$total=($_POST['quantity']*$_POST['price']);
$taxrate=( $_POST['tax'] / 100 );
$tax2=($taxrate*$total);
$end=($tax2+$total);echo $end;}
else
echo "!! fill it again";
?>
</body>
</html>
