// What is the easiest way get these two values, store them in $total and make $total = to $first + $second and echo it in the html?
<form action="testing123.php" method="get">
1. <input type="text" name="first"><br>
2. <input type="text" name="second"><br>
<input type="submit">
</form>
<?php
$x = $_GET["first"];
$y = $_GET["second"];
$total = $x + $y;
?>
first: <?php echo $_GET["first"]; ?><br>
second: <?php echo $_GET["second"]; ?><br>
total: <?php echo $_GET["total"]; ?>
分享 In your testing123.php file you need to change two lines.
$x + $y = $total;
to
$total=$x+$y;
Because according to rule, right hand side value is assigned to the left variable. You are assigning $total to $x + $y ,which makes no sense.
AND change
total: <?php echo $_GET["total"]; ?>
To
total: <?php echo $total; ?>
Because $GET holds the form elements for you.$total is your local variable which holds sum of $x and $y. So you need to echo it directly. $_GET["total"] holds no sense as we are not having any form input with 'total' name.
分享
