Form won't submit info to database - php

Question

I've been building a site recently for a friend and I've gotten stuck on this one form. A button links to url in which this form is on and then once you fill out all the information and click submit, instead of returning you back to home.php it just removes the form from view and all you see is a blank new.php and it doesn't submit the information.
<?php
function renderForm($user, $rank, $position, $error)
{
?>
<?php
if ($error != '')
{
echo '<div style="padding:4px; border:1px solid red; color:red;">'.$error.'</div>';
}
?>
<center>
<form action="" method="post">
<div class="form-group">
<label for="username">Username*</label>
<input id="username" class="form-control" type="text" name="user" placeholder="Username" value="<?php echo $user; ?>" />
</div>
<div class="form-group">
<label for="rank">Rank</label>
<select class="form-control" name="rank">
<option value="1">Pending Rank</option>
<option value="2">PVT</option>
</select>
</div>
<div class="form-group">
<label for="position">Position</label>
<input id="position" class="form-control" type="text" name="position" placeholder="MOG/GG" value="<?php echo $position; ?>" />
</div>
<div class="form-group">
<label for="Date">Date*</label>
<input id="Date" class="form-control" type="text" name="date" placeholder="<?php echo date('d M y'); ?>" value="<?php echo $date; ?>" />
</div>
<div class="form-group">
<label for="Tag">Tag*</label>
<input id="Tag" class="form-control" type="text" name="tag" placeholder="[]" value="<?php echo $tag; ?>" />
</div>
<div class="form-group">
<label for="adt">ADT</label>
<input id="adt" class="form-control" type="text" name="adt" placeholder="{TEST}" value="<?php echo $adt; ?>" />
</div>
<div class="form-group">
<label for="exp">EXP</label>
<input id="exp" class="form-control" type="text" name="exp" placeholder="420" value="<?php echo $exp; ?>" />
</div>
<div class="form-group">
<label for="reg">Regiment</label>
<input id="reg" class="form-control" type="text" name="reg" placeholder="[P]" value="<?php echo $reg; ?>" />
</div>
<div class="form-group">
<label for="Notes">Notes</label>
<input id="Notes" class="form-control" type="text" name="notes" placeholder="Notes" value="<?php echo $notes; ?>" />
</div>
<button type="submit" name="submit" class="btn btn-default" value="Submit">Submit</button>
</form>
<script>
$('.modal').on('hidden.bs.modal', function(){
$(this).find('form')[0].reset();
});
</script>
<?php
}
include('config/db.php');
if (isset($_POST['submit']))
{
$user = mysql_real_escape_string(htmlspecialchars($_POST['user']));
$rank = mysql_real_escape_string(htmlspecialchars($_POST['rank']));
$position = mysql_real_escape_string(htmlspecialchars($_POST['position']));
$date = mysql_real_escape_string(htmlspecialchars($_POST['date']));
$tag = mysql_real_escape_string(htmlspecialchars($_POST['tag']));
$adt = mysql_real_escape_string(htmlspecialchars($_POST['adt']));
$exp = mysql_real_escape_string(htmlspecialchars($_POST['exp']));
$reg = mysql_real_escape_string(htmlspecialchars($_POST['reg']));
$notes = mysql_real_escape_string(htmlspecialchars($_POST['notes']));
$datej = mysql_real_escape_string(htmlspecialchars($_POST['date']));
if ($user == '' || $rank == '' || $date == '' || $tag == '')
{
$error = '<center>ERROR: Please fill in all required fields!</center>';
#renderForm($user, $rank, $position, $error);
}
else
{
mysql_query("INSERT per SET user='$user', rank='$rank', position='$position', date='$date', tag='$tag', adt='$adt', exp='$exp', reg='$reg', notes='$notes', datej='$datej'", $db1)
or die(mysql_error());
include('logsadd.php');
write_mysql_log('has added member <font color="black"><b>'. $user .'</b></font>.', $db);
header("Location: home.php");
}
}
else
header("home.php");
{
#renderForm('','','');
}?>

Answer 1

Your else looks like this
else
header("home.php");
{
#renderForm('','','');
it should be
else
{
// header should be inside the else part
header("Location:home.php");
#renderForm('','','');