Allow HTML in User Descriptions

By default, WordPress will remove any HTMl from the user bio field on the edit user/profile screen.

It’s very easy to stop WordPress from doing this

remove_filter( 'pre_user_description', 'wp_filter_kses' );

However, you probably don’t want to leave it at that, as users could then add any code (iframes, scripts, etc.) and it wouldn’t be removed.

add_filter( 'pre_user_description', 'wp_filter_post_kses' );

Require Additional Profile Fields at Registration


add_action( 'register_form', 'additional_profile_fields' );
function additional_profile_fields() { ?>
        <label><?php _e('First Name') ?><br />
        <input type="text" name="first_name" id="first_name" class="input" size="25" tabindex="20" /></label>
        <label><?php _e('Last Name') ?><br />
        <input type="text" name="last_name" id="last_name" class="input" size="25" tabindex="20" /></label>
<?php }
add_action( 'register_post', 'add_register_field_validate_first_name', 10, 3 );
function add_register_field_validate_first_name( $sanitized_user_login, $user_email, $errors) {
    if (!isset($_POST[ 'first_name' ]) || empty($_POST[ 'first_name' ])) {
    	return $errors->add( 'firstnameempty', '<strong>ERROR</strong>: Please provide a first name.' );
add_action( 'register_post', 'add_register_field_validate_last_name', 10, 3 );
function add_register_field_validate_last_name( $sanitized_user_login, $user_email, $errors) {
    if (!isset($_POST[ 'last_name' ]) || empty($_POST[ 'last_name' ])) {
    	return $errors->add( 'lastnameempty', '<strong>ERROR</strong>: Please provide a last name.' );

add_action( 'user_register', 'insert_register_fields' );
function insert_register_fields( $user_id ) {
	$first_name = apply_filters('pre_user_first_name', $_POST['first_name']);
	$last_name = apply_filters('pre_user_last_name', $_POST['last_name']);
	update_user_meta( $user_id, 'first_name', $first_name );
	update_user_meta( $user_id, 'last_name', $last_name );

Remove IM Fields From Profile Page

Need to declutter the profile options by removing the various IM fields. It’s easy

add_filter('user_contactmethods', 'remove_im_options', 10, 2); 
function remove_im_options( $user_contactmethods, $user ) {
    //$user_contactmethods = array();
    return $user_contactmethods;