URGENT: error code when trying to add custom field after product description
Hello, can you help me please, I am trying to add this code in functions.php but it is giving me the error, please could you help me solve it, I will be grateful, thank you.

I want to display after button click

I am redoing a post to better explain what I would like to make work. I am currently working on a project where we must implement vulnerabilities or hacks that are interesting to present for educational purposes. Currently my project idea is to present QRphishing and website aspiration with HTTrack for malicious purposes. Currently we have been provided with a website called “balleshistik” which has a connection form to a members area. I currently have a copy of the website called “balleshistic” made using HTTrack. But the idea is that when a person arrives on my copied site and enters their identifiers in the form, their identifiers are stolen/stored on the hacker’s server which hosts the copied site and send that form POST request to the real site in order to actually connect the user to the member area of the real website, so that an average user who is tricked does not realize the deception.

i need to store inputs from an HTML POST form in a .txt file on a single page without needing another .php page, I need to have the form and the store function, on one single page because i’m directly sending the POST values to another Website when submitting my form.

I setup a basic login system. The <form class="login" action="/auth/login.php" method="post"> method is not working when testing it with print_r($_POST);.

Possuo um site da empresa onde temos uma aba de “fale conosco”, no código fonte está direcionado para uma conta de e-mail, mas ao enviar a mensagem chega para um e-mail que não está listado lá.

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I want to convert code into a readable format. Can you help me by suggesting any tools or websites that can help me make my code more readable?

I cannot find the error, everything seems to be fine but what could be the problem?

So I am creating a login form with php and html,for some reason that I can’t understand the message when user don’t use the write credentials doesn’t show up.

I want to show the basic info of the student for example according to their studentID when he/she enter her/his studentID it will direct to a page that he/she can see the basic info in database (PHP,HTML)