php form multiple submit buttons code example

Example 1: two buttons in same form

<input type="submit" name="button_1" value="Click me">

Example 2: multiple submit button in php

<?php
    if (isset($_POST['publish'])) {
        # Publish-button was clicked
    }
    elseif (isset($_POST['save'])) {
        # Save-button was clicked
    }
?>