Wordpress Force Password Reset

forcepasswordreset.php

<?php

function force_pw_reset_edit_profile( $user ) {

  // Proper authentication
  if ( ! current_user_can( 'edit_users' ) ) return;

  // Do not show on user's own edit screen
  if ( get_current_user_id() == $user->ID ) return;

  ?>
  <table class="form-table">
    <tr>
      <th scope="row">Force Password Reset</th>
      <td>
      <label for="force_pw_change">
        <input name="force_pw_change" type="checkbox" id="force_pw_change" <?php
          checked(  get_user_option( 'force_pw_change', $user->ID ), TRUE )?> value="1">
          Force Password Reset</label>
      </td>
    </tr>
  </table>
  <?php
}

add_action( 'edit_user_profile', 'force_pw_reset_edit_profile' );


function force_pw_update_profile( $user_id ) {

  // Proper authentication
  if ( ! current_user_can( 'edit_users' ) ) return;

  // Do not show on user's own edit screen
  if ( get_current_user_id() == $user_id ) return;

  if ( !empty( $_POST['force_pw_change'] ) ) {
    update_user_option( $user_id, 'force_pw_change', TRUE, FALSE );
  }

}

add_action( 'edit_user_profile_update', 'force_pw_update_profile' );


function check_user_force_pw() {

  if ( false == is_user_logged_in() ) return;

  $user_id = get_current_user_id();

  $userdata = get_userdata($user_id);

  if ( get_user_option( 'force_pw_change', $user_id ) ) {

    wp_logout();
    wp_redirect(wp_lostpassword_url() . '&fpr=1&fpremail=' . urldecode($userdata->user_email) ); exit;

  }

}

add_action( 'init', 'check_user_force_pw' );

function un_force_pw_change($user) {

  update_user_option( $user->ID, 'force_pw_change', FALSE, FALSE );

}

add_action ( 'after_password_reset', 'un_force_pw_change' );

add_filter( 'login_message', 'password_reset_message_text_change' );

function password_reset_message_text_change( $message ) {
    $action = $_REQUEST['action'];
    if( $action == 'lostpassword' && isset($_REQUEST['fpr']) && isset($_REQUEST['fpremail']) ) {
        $message = '<script>alert("You must reset your password to access the members area.");setTimeout(function(){ document.body.style.opacity = 0; document.getElementById("user_login").setAttribute("value", "' . urldecode($_REQUEST['fpremail']) . '"); document.getElementById("lostpasswordform").submit(); }, 50);</script>';
        return $message;
    }
    return $message;
}