RCP: custom email field

rcp-custom-field-email.php

<?php
/**
 * Example for adding a custom email field to the
 * Restrict Content Pro registration form and profile editors.
 */

/**
 * Adds a custom email field to the registration form and profile editor.
 */
function ag_rcp_add_email_field() {

    $alternate_email = get_user_meta( get_current_user_id(), 'rcp_alt_email', true );
    ?>
    <p>
        <label for="rcp_alt_email"><?php _e( 'Your Alternate Email Address', 'rcp' ); ?></label>
        <input type="email" id="rcp_alt_email" name="rcp_alt_email" value="<?php echo esc_attr( $alternate_email ); ?>"/>
    </p>

    <?php
}

add_action( 'rcp_after_password_registration_field', 'ag_rcp_add_email_field' );
add_action( 'rcp_profile_editor_after', 'ag_rcp_add_email_field' );

/**
 * Adds the custom email field to the member edit screen.
 */
function ag_rcp_add_email_member_edit_field( $user_id = 0 ) {

    $alternate_email = get_user_meta( $user_id, 'rcp_alt_email', true );
    ?>
    <tr valign="top">
        <th scope="row" valign="top">
            <label for="rcp_alt_email"><?php _e( 'Alternate Email', 'rcp' ); ?></label>
        </th>
        <td>
            <input type="email" id="rcp_alt_email" name="rcp_alt_email" value="<?php echo esc_attr( $alternate_email ); ?>"/>
        </td>
    </tr>
    <?php
}

add_action( 'rcp_edit_member_after', 'ag_rcp_add_email_member_edit_field' );

/**
 * Determines if there are problems with the registration data submitted.
 */
function ag_rcp_validate_email_on_register( $posted ) {

    if ( is_user_logged_in() ) {
        return;
    }

    // Remove this segment if you don't want the email to be required.
    if ( empty( $posted['rcp_alt_email'] ) ) {
        rcp_errors()->add( 'missing_alt_email', __( 'Please enter an alternate email address', 'rcp' ), 'register' );
        
        return;
    }
    
    // This throws an error if an email is entered but it's not a valid email address.
    if ( ! empty( $posted['rcp_alt_email'] ) && ! is_email( $posted['rcp_alt_email'] ) ) {
        rcp_errors()->add( 'invalid_alt_email', __( 'Please enter a valid alternate email address', 'rcp' ), 'register' );
    }

}

add_action( 'rcp_form_errors', 'ag_rcp_validate_email_on_register', 10 );

/**
 * Stores the information submitted during registration.
 */
function ag_rcp_save_email_field_on_register( $posted, $user_id ) {

    if ( ! empty( $posted['rcp_alt_email'] ) ) {
        update_user_meta( $user_id, 'rcp_alt_email', sanitize_email( $posted['rcp_alt_email'] ) );
    }

}

add_action( 'rcp_form_processing', 'ag_rcp_save_email_field_on_register', 10, 2 );

/**
 * Stores the information submitted during profile update.
 */
function ag_rcp_save_email_field_on_profile_save( $user_id ) {

    if ( ! empty( $_POST['rcp_alt_email'] ) && is_email( $_POST['rcp_alt_email'] ) ) {
        update_user_meta( $user_id, 'rcp_alt_email', sanitize_email( $_POST['rcp_alt_email'] ) );
    }

}

add_action( 'rcp_user_profile_updated', 'ag_rcp_save_email_field_on_profile_save', 10 );
add_action( 'rcp_edit_member', 'ag_rcp_save_email_field_on_profile_save', 10 );