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    <p>You need to take out <code>./</code> is in the <code>action=""</code> quotes like below (this is because you are using the same file to process the form)... and always start your php opening with <code>&lt;?php</code></p> <pre><code>&lt;form class="form1" method="post" action="" id="form1"&gt; &lt;fieldset&gt; &lt;ul&gt; &lt;p&gt;Please enter your username to continue to the webshop.&lt;/p&gt; &lt;label for="name"&gt;User Name:&lt;/label&gt;&lt;span&gt;&lt;input type="text" name="username" placeholder="User Name" class="required" role="input" aria-required="true"/&gt;&lt;/span&gt; &lt;input class="submit .transparentButton" value="Next" type="submit" name="Submit"/&gt; &lt;/ul&gt; &lt;br/&gt; &lt;/fieldset&gt; &lt;/form&gt; &lt;?php if (isset($_POST['Submit'])) { $_SESSION['username'] = $_POST['username']; } ?&gt; </code></pre> <p>And if you want to test it try something like this:</p> <pre><code>&lt;?php if (isset($_POST['Submit'])) { $_SESSION['username'] = $_POST['username']; // Use the following code to print out the variables. echo 'Session: '.$_SESSION['username']; echo '&lt;br&gt;'; echo 'POST: '.$_POST['username']; } ?&gt; </code></pre> <p>Tested the code after making the changes, and it works fine... look:</p> <blockquote> <p><img src="https://i.stack.imgur.com/tnLsZ.png" alt="Tested screenshot"></p> </blockquote> <hr> <p><strong>Update answer based of requests in the comments</strong></p> <pre><code>&lt;form class="form1" method="post" action="./" id="form1"&gt; &lt;fieldset&gt; &lt;ul&gt; &lt;p&gt;Please enter your username to continue to the webshop.&lt;/p&gt; &lt;label for="name"&gt;User Name:&lt;/label&gt;&lt;span&gt;&lt;input type="text" name="username" placeholder="User Name" class="required" role="input" aria-required="true"/&gt;&lt;/span&gt; &lt;input class="submit .transparentButton" value="Next" type="submit" name="Submit"/&gt; &lt;/ul&gt; &lt;br/&gt; &lt;/fieldset&gt; &lt;/form&gt; </code></pre> <p>PUT THIS IN YOUR index.php</p> <pre><code>&lt;?php if (isset($_POST['Submit'])) { $_SESSION['username'] = $_POST['username']; // Use the following code to print out the variables. echo 'Session: '.$_SESSION['username']; echo '&lt;br&gt;'; echo 'POST: '.$_POST['username']; } ?&gt; </code></pre>
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    1. POForm Submit to change/modify session variables in PHP
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    1. USArian Faurtosh
    1. USArian Faurtosh
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    1. POForm Submit to change/modify session variables in PHP
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    1. COLooking at my code, and seeing as I am relatively new to PHP. I can't see where to put this. I am using the 'method = post' and that's all i know really, sorry.
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    2. CO@user2993761 updated my answer.
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    3. COThis worked perfectly, Thanks all. I have fixed the ul-li problem as well. One last thing, because I can't use the action="./" anymore. Is there another way I can have the log in button also redirect me to the home (index.php) page without an extra button/link? Thanks Also I would up-Vote but I am not able because this is a new account
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