PHP not posting form enteries to the same page - php

Question

Here's a form I have. I want to post the form entries to the same page and then do something else with it. However, echoing the values doesn't seem to be working. What am I doing wrong?
Here's the HTML part:
<div class="well">
<form name="myform" class="form-horizontal" id="form" onsubmit="return validateForm(this);" action="my.php" method="post">
<div class="control-group input-append">
<label for="text" class="control-label">Field1</label>
<div class="controls">
<div class="left">
<input id="Field1" name="Field1" type="text"/>
</div>
</div>
</div>
<br>
<div class="control-group input-append">
<label for="passwd" class="control-label">Field2</label>
<div class="controls">
<div class="left1">
<input id="Field2" name="Field2" type="password" />
</div>
</div>
</div>
<br>
<div class="control-group input-append">
<label for="passwd" class="control-label">Field3</label>
<div class="controls">
<div class="left1">
<input id="Field3" name="Field3" type="password"/>
</div>
</div>
</div>
<br>
<div class="control-group input-append">
<label for="select" class="control-label">Field4</label>
<div class="controls">
<div class="left1">
<select class="form-control" name="Field4">
<option value="OP1">OP1</option>
<option value="OP2">OP2</option>
<option value="OP3">OP3</option>
<option value="OP4">OP4</option>
</select>
</div>
</div>
</div>
<br>
<div class="control-group input-append">
<label for="text" class="control-label">Field5</label>
<div class="controls">
<div class="left">
<input type="Field5" id="Field5" name="type"/>
</div>
</div>
</div>
<br>
<div class="control-group input-append">
<label for="text" class="control-label">Field6</label>
<div class="controls">
<div class="left">
<input type="text" id="Field6" name="Field6"/>
</div>
</div>
</div>
<br>
<div class="control-group">
<div class="controls">
<div class="left1">
<input type="submit" class="btn btn-success"/>
</div>
</div>
</div>
</form>
</div>
PHP part:
<?php
if (isset($_POST['submit']))
{
echo $_POST['name'];
} else {?>
<?php;}?>

Answer 1

There is no field with the name $_POST['name'], though you have fields with numbered names, e.g. $_POST['Fields3'].
To debug the form request print out the whole $_POST array first:
var_dump( $_POST );
The type of an input is not the same as it's name!

Answer 2

Another option is to replace
if (isset($_POST['submit']))
with:
if($_SERVER['REQUEST_METHOD'] == 'POST')

Answer 3

Replace <input type="submit" class="btn btn-success"/>
to <input type="submit" name="submit" class="btn btn-success"/>

Answer 4

The problem is here:
if (isset($_POST['submit']))
Your submit button
<input type="submit" class="btn btn-success" />
does not have a value, nor does it have a name. Post works with these attributes:
$_POST['<name>'] = <value>
change your input to
<input type="submit" name="submit" value="Submit" class="btn btn-success" />
Btw, nice to see people still coding in XHTML. If you are using HTML 5, you should not end your non-closing tags with a slash ... />.