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I am typing a simple codes in PHP and HTML. How can I display the result in same page of browser not in another window tab or page?
Following is the simple HTML formula code:
To add two numbers and display on the same page
<html>
<head>
<title> Sum of two numbers </title>
<body>
<form action="sum.php" method="POST">
First Number: <input type="Text" Name="Num1"><br>
Second Number: <input type="Text" Name="Num2"><p>
<input type="Submit" value="Calculate">
</form>
</body>
</html>
and sum.php file is as follows.
<?php
// add First and Second Numbers
$sum = $_POST["Num1"] + $_POST["Num2"];
// their sum is diplayed as
echo "The sum of First Number (".$_POST["Num1"].") and
Second Number (".$_POST["Num2"].") is $sum";
?>
221
asked Nov 29 '25 20:11
<html>
<head>
<title> Sum of two numbers </title>
<body>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
First Number: <input type="Text" Name="Num1"><br>
Second Number: <input type="Text" Name="Num2"><p>
<input type="Submit" value="Calculate">
</form>
<?php
if (count($_POST) > 0 && isset($_POST["Num1"]) && isset($_POST["Num2"])){
// add First and Second Numbers
$sum = $_POST["Num1"] + $_POST["Num2"];
// their sum is diplayed as
echo "The sum of First Number (".$_POST["Num1"].") and
Second Number (".$_POST["Num2"].") is $sum";
}
?>
</body>
</html>
You have to combine the PHP code and the HTML code in the same file.
Then you just set the forms action to the same page.
45
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