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copied!<p>First of all, <a href="https://stackoverflow.com/questions/379610/can-you-nest-html-forms">you can't nest forms</a>.<br> As I understand the idea is to group some elements. If so, then replace the interior <code><form></code>tags with <code><div></code>s.</p> <p>The other problem is that you want to use the same input elements names through different sections. Basically, if <code>name</code> is not unique, it will get updated with the last occurrence's value. For example:</p> <pre><code><input type="text" name="a" value="val 1" /> <input type="text" name="a" value="val 2" /> </code></pre> <p>When the above is posted, <code>$_POST['a']</code> will contain <code>val 2</code> value. Even, if the second text-box is hidden. So either you make text-boxes names unique or you disable the ones, which are hidden. <code>disabled</code> attribute will make the control disabled for user input and also not present in <code>$_POST</code> array. So, in this case:</p> <pre><code><input type="text" name="a" value="val 1" /> <input type="text" name="a" value="val 2" disabled /> </code></pre> <p><code>$_POST['a']</code> will contain <code>val 1</code> value, because the second text-box is disabled.<br> In your case, every time you hide a section you should disable all controls within the group. Here's how to do it: <a href="https://stackoverflow.com/questions/5290525/disable-all-form-elements-inside-div">disable all form elements inside div</a>.</p>

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