PHP PROGRAM TO STORE VALUE IN DATABASE USING TEXT BOX

 Sure, here's a simple PHP program that allows you to store data into a database using a text box:

php
<?php
// Establish database connection
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";
$conn = mysqli_connect($servername, $username, $password, $dbname);

// Check connection
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Get input values from form
    $name = $_POST["name"];
    $email = $_POST["email"];
    $message = $_POST["message"];

    // Prepare SQL statement to insert data into database
    $sql = "INSERT INTO messages (name, email, message) VALUES ('$name', '$email', '$message')";

    // Execute SQL statement and check for errors
    if (mysqli_query($conn, $sql)) {
        echo "Data stored successfully!";
    } else {
        echo "Error: " . $sql . "<br>" . mysqli_error($conn);
    }
}

// Close database connection
mysqli_close($conn);
?>

<!-- HTML form to collect input values -->
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
    Name: <input type="text" name="name"><br>
    Email: <input type="text" name="email"><br>
    Message: <textarea name="message"></textarea><br>
    <input type="submit" value="Submit">
</form>

This program connects to a MySQL database and uses the mysqli_query() function to insert the input values into a table named messages. The input values are collected using an HTML form that submits the data to the PHP script when the user clicks the "Submit" button.

Note that this is a very basic example and you should add additional validation and security measures to your code if you plan to use it in a production environment.