WordPress hooks to use: show_user_profile, edit_user_profile, personal_options_update, and edit_user_profile_update.
Sample Code for adding extra fields in Edit User Section:
add_action( 'show_user_profile', 'extra_user_profile_fields' );
add_action( 'edit_user_profile', 'extra_user_profile_fields' );
function extra_user_profile_fields( $user ) { ?>
<h3><?php _e("Extra profile information", "blank"); ?></h3>
<table class="form-table">
<tr>
<th><label for="address"><?php _e("Address"); ?></label></th>
<td>
<input type="text" name="address" id="address" value="<?php echo esc_attr( get_the_author_meta( 'address', $user->ID ) ); ?>" class="regular-text" /><br />
<span class="description"><?php _e("Please enter your address."); ?></span>
</td>
</tr>
<tr>
<th><label for="city"><?php _e("City"); ?></label></th>
<td>
<input type="text" name="city" id="city" value="<?php echo esc_attr( get_the_author_meta( 'city', $user->ID ) ); ?>" class="regular-text" /><br />
<span class="description"><?php _e("Please enter your city."); ?></span>
</td>
</tr>
<tr>
<th><label for="postalcode"><?php _e("Postal Code"); ?></label></th>
<td>
<input type="text" name="postalcode" id="postalcode" value="<?php echo esc_attr( get_the_author_meta( 'postalcode', $user->ID ) ); ?>" class="regular-text" /><br />
<span class="description"><?php _e("Please enter your postal code."); ?></span>
</td>
</tr>
</table>
<?php }
Sample Code for saving extra fields details in database:
add_action( 'personal_options_update', 'save_extra_user_profile_fields' );
add_action( 'edit_user_profile_update', 'save_extra_user_profile_fields' );
function save_extra_user_profile_fields( $user_id ) {
if ( !current_user_can( 'edit_user', $user_id ) ) {
return false;
}
update_user_meta( $user_id, 'address', $_POST['address'] );
update_user_meta( $user_id, 'city', $_POST['city'] );
update_user_meta( $user_id, 'postalcode', $_POST['postalcode'] );
}
There are also several blog posts available on the subject that might be helpful:
