Obtener valor input y enviar mediante post

[KATHYU]

An HTML form with two submit buttons, with different actions:

Código HTML:

<form action="/action_page.php">
  First name: <input type="text" name="fname"><br>
  Last name: <input type="text" name="lname"><br>
  <input type="submit" value="Submit"><br>
  <input type="submit" formaction="/action_page2.php"
  value="Submit as admin">
</form>
 

https://www.w3schools.com/html/html_form_attributes.asp