UPDATE through selected radio button - php

Question

Hi guys and sorry for my english,
I try to make a simple UPDATE through selected radio buttons, but it's not working. I have a 3 <input type='radio'> buttons in while loop and every button should do something else which I want to filtered.
$result=mysql_query("SELECT id FROM table WHERE state=0");
while ($record=mysql_fetch_array($result)):
<form method='post' action=''>
<input type='radio' name='state' value='1' /> 1
<input type='radio' name='state' value='2' /> 2
<input type='radio' name='state' value='3' /> 3
<input type='submit' value='Send' />
</form>
endwhile;
If I choose one of the three button and click on "Send", then one row (based on ID) should be UPDATE a MySQL db:
mysql_query ("UPDATE table SET state=(selected radio button number 1-3) WHERE id=$record[id]");
But, the script it must be out of the while loop and if I make it this way, it's not working because the script can't recognize which ID was chosen.
If I make it like this:
$result=mysql_query("SELECT id FROM table WHERE state=0");
while ($record=mysql_fetch_array($result)):
<form method='post' action=''>
<input type='radio' name='state' value='$record[id]' /> 1
<input type='radio' name='state' value='$record[id]' /> 2
<input type='radio' name='state' value='$record[id]' /> 3
<input type='submit' value='Send' />
</form>
endwhile;
then ID is recognize by script, but I don't know, how can I filtered which number (1, 2 or 3) is sending to UPDATE query for "state" column. It's a big dilemma for me and I can't figure out. I need to recognized ID and filter the chosen number (1-3). Can you help me out ?

Answer 1

There is two options.
First:
$result=mysql_query("SELECT id FROM table WHERE state=0");
while ($record=mysql_fetch_array($result)):
<form method='post' action=''>
<input type='hidden' name='recordId' value='$record[id]' />
<input type='radio' name='state' value='1' />
<input type='radio' name='state' value='2' />
<input type='radio' name='state' value='3' />
<input type='submit' value='Send' />
</form>
endwhile;
and
$recordId = (int)$_POST['recordId'];
$state = (int)$_POST['state'];
mysql_query ("UPDATE table SET state=$state WHERE id=$recordId");
Second:
$result=mysql_query("SELECT id FROM table WHERE state=0");
<form method='post' action=''>
while ($record=mysql_fetch_array($result)):
<input type='radio' name='state[$record[id]]' value='1' />
<input type='radio' name='state[$record[id]]' value='2' />
<input type='radio' name='state[$record[id]]' value='3' />
endwhile;
<input type='submit' value='Send' />
</form>
and
foreach($_POST['state'] as $key => $val) {
$recordId = (int)$key;
$state = (int)$val;
mysql_query ("UPDATE table SET state=$state WHERE id=$recordId");
}
(note that the code above is probably not syntactically correct, and given as an illustration to the idea)
Also, mixing up code and data is a bad practice; consider using prepared statements instead.