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Add Registration field Woocommerce
//1. Add a new form element...
function myplugin_register_form (){
$first_name = ( isset( $_POST['first_name'] ) ) ? $_POST['first_name']: '';
<label for="first_name"><?php _e('First Name','mydomain') ?><br />
<input type="text" name="first_name" id="first_name" class="input" value="<?php echo esc_attr(stripslashes($first_name)); ?>" size="25" /></label>
//2. Add validation. In this case, we make sure first_name is required.
add_filter('registration_errors', 'myplugin_registration_errors', 10, 3);
function myplugin_registration_errors ($errors, $sanitized_user_login, $user_email) {
if ( empty( $_POST['first_name'] ) )
$errors->add( 'first_name_error', __('<strong>ERROR</strong>: You must include a first name.','mydomain') );
return $errors;
//3. Finally, save our extra registration user meta.
add_action('user_register', 'myplugin_user_register');
function myplugin_user_register ($user_id) {
if ( isset( $_POST['first_name'] ) )
update_user_meta($user_id, 'first_name', $_POST['first_name']);
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