Enable save to database when checkbox is clicked using PHP & MySQL - php

Question

First of all, I am using PHP and MySQL in the Joomla Framework (but not interested at this point in the Joomla MVC structure).
I have a list of data from a database (Table A) and next to that I have added a checkbox. When I click on a checkbox, I want the data from the enabled checkbox to be sent (insert a copy of) to a new table (Table B) when I click on the 'Save' button and have that data listed on a new web page. The ones that are unchecked should not be sent to the new table and therefore should be ignored. Also, the 'Save' button must initially be disabled until a checkbox is checked.
Now, there must be a relationship between the existing data in a table (Table A) to the new table (Table B), so for example when the main existing data is deleted from the table (Table A), it should also automatically delete the data in the new table (Table B).
I know some PHP and MySQL but not enough to figure out some of the above.
Can some smart PHP and MySQL guru please point me to the right direction as I'm pulling my hair out, especially with the checkbox issue. Thanks!

Answer 1

To send data to another page and to displaying a message you'll need AJAX.
And for that check this page:
Ajax passing data to php script
But without the message ( to send data to a page ) , use this ->
Let's say that you have:
<form action="insertInDatabase.php" method="post">
<input type="checkbox" name="cbs[]" value="firstValue">First value<br>
<input type="checkbox" name="cbs[]" value="secondValue">Second value
</form>
So here you send your data to "insertInDatabase.php".
There you have this:
//connection do mySql database
if(!empty($_POST['cbs'])) {
foreach($_POST['cbs'] as $cb) {
mysql_query("INSERT INTO table2(checkedCheckBoxValue) VALUES('$cb');");
}}