如果我们在页面上有2个表单，如何运行2个函数？

Question

Not a php guru here.

I have one form and when I hit the submit, it runs the function():

<form id="saveId" action="" method="POST" class="" autocomplete="off">
    <input type="hidden" name="save_post_value" value="<?php echo $userPosts; ?>"> 
    <button  type="submit" class="save_post btn btn-danger">Save to box</button>
</form>

<?php                       
    if($_SERVER['REQUEST_METHOD']=="POST") {
        update_user_meta( $user_id, 'save_post', $userPosts );
    }
?>

That's fine with one form, but what if we have two forms and functions?

<form id="saveId" action="" method="POST" class="" autocomplete="off">
    <input type="hidden" name="save_post_value" value="<?php echo $userPosts; ?>"> 
    <button  type="submit" class="save_post btn btn-danger">Save to box</button>
</form>

<form id="favorite" action="" method="POST" class="" autocomplete="off">
    <input type="hidden" name="save_fav" value="<?php echo $userfavs; ?>"> 
    <button  type="submit" class="save_fav btn btn-danger">Add to favs</button>
</form>

Can't do obviously:

<?php                       
    if($_SERVER['REQUEST_METHOD']=="POST") {
        update_user_meta( $user_id, 'save_post', $_POST['save_post_value'] );
    }                   
    if($_SERVER['REQUEST_METHOD']=="POST") {
        update_user_meta( $user_id, 'save_fav', $_POST['save_fav'] );
    }
?>

Answer 1

Check which hidden input is set.

if ($_SERVER['REQUEST_METHOD'] == "POST") {
    if (isset($_POST['save_post_value'])) {
        update_user_meta( $user_id, 'save_post', $_POST['save_post_value'] );
    } elseif (isset($_POST['save_fav'])) {
        update_user_meta( $user_id, 'save_fav', $_POST['save_fav'] );
    }
}