Change the messaging for expired events in Event Espresso 4.

new_gist_file_0.md

Add the sample code below to your child theme's functions.php file or in a site specific plugin.

<?php
//* Do NOT include the opening php tag
 
//* Replace the existing messaging text with something else
function ee_change_expired_tickets_messaging( $translated, $original, $domain ) {
 
    $strings = array(
        'We\'re sorry, but all tickets sales have ended because the event is expired.' => 'Unfortunately, all tickets have been sold!',
    );

    if ( isset( $strings[$original] ) ) {
        $translations = &get_translations_for_domain( $domain );
        $translated = $translations->translate( $strings[$original] );
    }
 
    return $translated;
}
 
add_filter( 'gettext', 'ee_change_expired_tickets_messaging', 10, 3 );

References: