The form method i fpost, after posting the form, you can reach the textareas with $POST["A"] $POST["B"] $_POST["C"]
(if the textfield's name are A, B , C)
if the user filled out all the textareas, then connect to a database, and run a mysql INSERT command
Here you can find some good examples, and explanations:
http://www.tizag.com/mysqlTutorial/
<?php
if(!empty($_POST['A']) AND !empty($_POST['B']) AND !empty($_POST['C']))
{
include("connect_mysql.php"); //include the connection to the database
$B = mysql_real_escape_string($_POST['B']); //lets use the escape function to keep your table protected
$C = mysql_real_escape_string($_POST['C']);
$A = mysql_real_escape_string($_POST['A']);
$query = "INSERT INTO abc (id,B, C, A)
VALUES ('','$B','$C','$A')"; //create the sql query for insert
$result=mysql_query($query) or die(mysql_error()); // run this query
}
else
print "Fill all the textareas<br />";
?>