如何在woocommerce中获取自定义注册表单上的所有错误消息

function add_custom_field_to_registration_form() {
    ?>
    <p class="form-row">
        <label for="custom_field"><?php _e( 'Custom Field', 'woocommerce' ); ?> <span class="required">*</span></label>
        <input type="text" class="input-text" name="custom_field" id="custom_field" value="<?php if ( ! empty( $_POST['custom_field'] ) ) echo esc_attr( $_POST['custom_field'] ); ?>" />
    </p>
    <?php
}
add_action( 'woocommerce_register_form', 'add_custom_field_to_registration_form' );

function validate_custom_field( $errors ) {
    if ( empty( $_POST['custom_field'] ) ) {
        $errors->add( 'custom_field_error', __( 'Please enter a value for the custom field.', 'woocommerce' ) );
    }
    return $errors;
}
add_filter( 'woocommerce_registration_errors', 'validate_custom_field', 10, 1 );

function get_custom_registration_errors() {
    $errors = wc_get_notices( 'error' );
    return $errors;
}

function display_custom_registration_errors() {
    $errors = get_custom_registration_errors();
    if ( ! empty( $errors ) ) {
        foreach ( $errors as $error ) {
            echo '<div class="woocommerce-error">' . $error . '</div>';
        }
    }
}
add_action( 'woocommerce_before_customer_login_form', 'display_custom_registration_errors' );