Mindvalley

Outputs $_POST or $_GET variable values using shortcodes.
Super duper uberly useful on tracking scripts on eCommerce thank you pages.
Example:
<ul>
<li>$_POST[’email’] > [post_var name=”email”]</li>
<li>$_GET[‘txn_id’] > [get_var name=”txn_id”]</li>
</ul>
For Array values :
<ul>
<li>$_POST[‘user’][’email’] > [post_var] name=”user[email]” [/post_var]</li>
<li>$_GET[‘user’][‘first_name’] > [get_var] name=”user[first_name]” [/get_var]</li>
<li>$_GET[‘user’][‘address’][‘line1’] > [get_var] name=”user[address][line1]” [/get_var]</li>
</ul>
Note: Remember to wrap the name attribute in double quotes (“).

Mindvalley Post & Get Variables

Lets you output a POST or GET variable in the page via shortcode.

filmmaker3000

The Snippets SE WordPress plugin allows you to create variables that render as different text on your site. You could use {{phone}} to display your company\’s phone number across your site, and only have to change it in 1 place. Make your own variables and customize them to do things!
Check out the <a href="https://github.com/kangaskahn/snippets-se" rel="nofollow ugc">github repo</a> for more information.

Snippets SE

Use custom {{variables}} across your site to display and manage information in multiple places.

Mindvalley Post & Get Variables vs Snippets SE