How to update a user's password from a form field

Created by Phil Kurth, Modified on Fri, 4 Nov, 2022 at 5:12 PM by Phil Kurth

To update a user's password, you need to:

Set up an ACF field so the user can enter their password.
Hook into the af/form/editing/user_updated filter to get the value from the designated field using af_get_field('FIELD_NAME').
Set the new password using the wp_set_password() function.

add_action( 'af/form/editing/user_updated', function ( $user, $form, $args ) {

  // If we aren't handling the desired form, return early.
  if ( $form['key'] !== 'FORM_KEY_HERE' ) {
    return;
  }

  // Get the password from the submitted field.
  $password = af_get_field( 'password_field' );

  // Set the password for the user. Note that this will log the user out.
  wp_set_password( $password, $user->ID );

  // Set the auth cookie so the user is logged back in immediately.
  wp_set_auth_cookie( $user->ID );

}, 10, 3 );