Edit Mysql Table With A Form - php

Question

I want to edit mysql data using a contact form. When the user clicks edit on the specific post they want to change, it takes them to a form that has the post values in the input fields, and they can change whatever they want about the post. I already have this part working but now I need the change to actually take effect once the user clicks submit. How can I accomplish this?
Here is the PHP that displays all the text from the blog post in mysql into the input fields when the user clicks edit.
<?php
include "../php/db_connect.php";
if (isset($_GET['id'])) {
$id = $_GET['id'];
$sql = mysql_query("SELECT * FROM articles WHERE id='$id'");
while($row = mysql_fetch_array($sql)) {
$id = $row['id'];
$title = $row['title'];
$content = $row['content'];
$written_by = $row['written_by'];
$category = $row['category'];
}
?>
<div class="content_wrapper">
<h1 class="content_heading">Edit A Blog Post</h1>
<form method="post" action="php/edit_article_process.php" enctype="multipart/form-data" id="upload_article_form">
<span>Title</span>
<input type="text" name="title" class="input" value="<?php echo $title; ?>"/>
<span>Article</span>
<textarea rows="20" name="ckeditor1" class="input" style="resize:none;"><?php echo $content ?></textarea>
<span>Author</span>
<input type="text" name="written_by" class="input short_input" value="<?php echo $written_by; ?>"/>
<span>Category - <i>Spell it right nigga</i></li></span>
<input type="text" name="category" class="input short_input" value="<?php echo $category?>"/>
<input type="submit" name="update" class="input submit_button"/>
</form>
<?php } ?>
</div>
Now all I need is for the change to take effect when the user clicks submit.

Answer 1

Your form attribute method has a value of post which is not the same method you used inside the isset() function
You should use:
$_GET['id'] //if your method="get"
and
$_POST['id'] //if your method="post"

Answer 2

if you want the change to appear directly you should re-fresh the page after editing the values
header('Location: www.samepage.php');