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/**
 * @param $buffer
 * @return string|string[]|null
 *
 * Astra - удаляем лишний h2 из навигации
 *
 */
function callback($buffer) {
//    s($buffer);

    // replace all the apples with oranges
    return (preg_replace('/<h2 class="screen-reader-text">(.*)<\/h2>/', '<span class="screen-reader-text">$1</span>', $buffer));
}
ob_start("callback");