Modify event link (make it linkable)

// Change links for event, venue and organizer websites so
// that they read 'Visit website' rather than exposing the
// actual URL itself

function modify_event_link( $link ) {
    return replace_link_text( $link, 'Visit website', 'No website' );
}

function replace_link_text( $link, $replacement_text, $failure_text ) {
    if ( empty( $link) ) return $failure_text;
    if ( false === ( $inner_starts = strpos($link, '>') ) ) return $failure_text;
    if (false === ( $inner_ends = strpos( $link, '<', ++$inner_starts ) ) ) return $failure_text;
    return substr_replace($link, $replacement_text, $inner_starts, $inner_ends - $inner_starts);
}

add_filter( 'tribe_get_event_website_link', 'modify_event_link' );
add_filter( 'tribe_get_organizer_website_link', 'modify_event_link' );
add_filter( 'tribe_get_venue_website_link', 'modify_event_link' );