Extra Profile Fields - simple code to add extra user meta fields to the back-end, place in functions.php

gistfile1.aw

add_action( 'show_user_profile', 'show_extra_profile_fields', 10 );
add_action( 'edit_user_profile', 'show_extra_profile_fields', 10 );
 
function show_extra_profile_fields( $user ) { ?>
 
	<h3><?php _e('Extra Profile Information'); ?></h3>
 
	<table class="form-table">
 
		<tr>
			<th><label for="twitter"><?php _e('Twitter'); ?></label></th>
 
			<td>
				<input type="text" name="twitter" id="twitter" value="<?php echo esc_attr( get_user_meta( $user->ID, 'twitter', true ) ); ?>" class="regular-text" /><br />
				<span class="description"><?php _e('Please enter your Twitter account name.'); ?></span>
			</td>
		</tr>
 
	</table>
<?php }
 
add_action( 'personal_options_update', 'save_extra_profile_fields' );
add_action( 'edit_user_profile_update', 'save_extra_profile_fields' );
 
function save_extra_profile_fields( $user_id ) {
 
	if ( !current_user_can( 'edit_user', $user_id ) ) return false;
 
	update_user_meta( $user_id, 'twitter', trim(esc_attr( $_POST['twitter'] )) );
}