quotes in mysql

I have a lot of people coming to the website putting in characters like so:

Large Pony Hunter (2', 6"); 2008 USEF Zone 3 Children's Large Pony Hunter - 7th place overall;

As soon as this is posted, it deletes everything after the the 6.
Example: Large Pony Hunter (2', 6

When I remove the ", all the data is there. What can I do to prevent this from happening? The weird thing is, it doesn't happen in every field.
It seems to be okay in the admin area so could it be in the php? I have attached the page.

(Its the last field on the page)

on this page, the data is being stored in a session, can you send a copy of the page that sets the session please.

what you mean by the page that sets the sessions.

Here is the page that sends the sessions to the database. I have this page's sessions going to 4 different pages as hidden values consecutively and then it goes to this last page. However, Its viewed on the 3rd page and not all the info is displayed in that field with the " (inches)

I wrote it out as 2 feet and 6 inches instead of 2' 6" and it posted.

I have created a support ticket so we can look into this issue further.

To view and edit your support ticket, please log into your support history:
supporthistory.php

If anyone else is experiencing this same issue, please append to this thread.

Hi, Trying to look this up for reminder of the solution..Have the problem again with the quotes (see above) and can't find the answer.

I'll need to troubleshoot directly, see the private message section.

You know how the quotes come in weird when they are copied and pasted..So I used html code to add quotes. It wasn't the problem above. thanks Jason!

you're welcome.

I thought I had fixed this problem but its not working. This is done with a form and then it posts to an email with universal email. Instead of 2'6" its posting as (2‘6") I know we had a fix for this but I don't remember what it was.

try adding the following code at line 1:

<?php
if($_SERVER["REQUEST_METHOD"] == "POST")     {
    foreach($_POST as $k => $v) {
		$_POST[$k] = stripslashes($v);
	}
}
?>