<?php
$username = "username";
$password = "password";
$host = "localhost";
$db = $username;
$connection = mysqli_connect($host, $username, $password, $db);

    if(isset($_POST["PSol"]))
    {
        $sql = "UPDATE table SET column = '..' WHERE id = 1";

        if ($connection->query($sql) === TRUE) {
            echo "Record updated successfully";

            mysqli_close($connection);
            echo "<p>Disconnected from server: ".$host."</p>";
        } else {
            echo "Error updating record: " . $connection->error;

            mysqli_close($connection);
            echo "<p>Disconnected from server: ".$host."</p>";
        }
    }
}
?>
<form method = "POST" name = "PSolCanvas" class = "PSolCanvas">
    <input type = "button" name = "PSol" class = "PSol" value = "P"/>
</form>