How can PHP beginners effectively add values from input fields in a form?

To add values from input fields in a form using PHP, beginners can utilize the $_POST superglobal array to retrieve the values submitted through the form. By accessing the values using their corresponding input field names, beginners can perform any necessary calculations or operations with the inputted data. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $num1 = $_POST['num1'];
    $num2 = $_POST['num2'];
    
    $result = $num1 + $num2;
    
    echo "The sum of $num1 and $num2 is: $result";
}
?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <label for="num1">Number 1:</label>
    <input type="text" name="num1"><br><br>
    
    <label for="num2">Number 2:</label>
    <input type="text" name="num2"><br><br>
    
    <input type="submit" value="Add Numbers">
</form>

Keywords

PHP form input fields values beginners

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