Pulling data from a URL to insert in WordPress text

Question

I'm just getting started with WordPress and have no prior experience with coding. I was wondering if someone could help me perform this task :

I am basically trying to pull data from a URL: https://equipelupien.com/partenaires-perso?calendly=jplupien&nomDu=stevenchose

I want the data nomDu=stevenchose to populate in a text field in WordPress. To give context, it's for a mortgage broker firm, and this page is made for a customer who wants to book an appointment referred by a partner. So in my text, we would read Fill out the form above to make an appointment with a broker referred by (here my data from URL)

Answer 1

You pull the data (the query string) from the $_GET array.

So to output in a text box it would look like this for WordPress

<input type="text" value="<?= sanitize_text_field($_GET['nomDu']); ?>" />

Some explanation:

• <?= is short for <?php echo
• sanitize_text_field is a WordPress core function that removes tags from the string that you cannot trust. esc_attr also could be used instead (difference)

You could also add it as a shortcode:

add_shortcode('nom-du-text', function(){
    return '<input type="text" value="' . sanitize_text_field($_GET['nomDu']) . '"/>'
});

Then you could use [nom-du-text] from the post editor.

Finally, to simple output this as text just add <?= sanitize_text_field($_GET['nomDu']); ?> to the page PHP template.