notes

call php function from button

<!DOCTYPE html
<html
  <body
    <form name="word" action="t-1.php" method="post"
      <input type="submit" name="test_1" value="func_1" /<br/
      <input type="submit" name="test_2" value="func_2" /<br/
      <input type="submit" name="test_3" value="func_3" /<br/
    </form
  </body
</html

<?php

or using get ...

<form  method="get" name="name">
  <a href="get.php">clear</a><br><br>	
  <label for="name">Name:</label>
  <input type="text" id="name" name="name"><br><br>
  <input type="submit" value="Submit" name="btn_name">

</form>

</form>

<?PHP
/*
 submit loads the form, isset($_GET['btn_name']) checks to see if button x was pressed
 */

if(isset($_GET['btn_name'])) {
	echo "Hello ".$_GET['name'];
}

if(isset($_GET['btn_age'])) {
	echo "You are  ".$_GET['age']. " years old";
}