HTML form, add the data into it and submit it to the database by connecting it to MySQL database using PHP.
<?php
// database connection code
// $con = mysqli_connect('localhost', 'database_user', 'database_password','database');
$con = mysqli_connect('localhost', 'root', '','db_connect');
// get the post records
$txtName = $_POST['txtName'];
$txtEmail = $_POST['txtEmail'];
$txtPhone = $_POST['txtPhone'];
$txtMessage = $_POST['txtMessage'];
// database insert SQL code
$sql = "INSERT INTO `tbl_contact` (`Id`, `fldName`, `fldEmail`, `fldPhone`, `fldMessage`) VALUES ('0', '$txtName', '$txtEmail', '$txtPhone', '$txtMessage')";
// insert in database
$rs = mysqli_query($con, $sql);
if($rs)
{
echo "Contact Records Inserted";
}
?>