有什么可以帮忙的吗？

我喜欢这个comma separated version

//** WORKING - Works on the Checkout page
add_action( \'woocommerce_cart_contents\', \'pst_pdf_ceckout_page_button\' );
function pst_pdf_ceckout_page_button() {
    if( current_user_can(\'administrator\') || current_user_can(\'ABC\') || current_user_can(\'LMN\') || current_user_can(\'XYZ\') ) {
echo \'<a class="button bc-pst-pdf-btn" https://LINK TO FILE.pdf" target="_blank">PST Exempt PDF Form </a>\';
} 
}


//** NOT WORKING - Won\'t show up on the Checkout page.
add_action( \'woocommerce_cart_contents\', \'pst_pdf_ceckout_page_button\' );

function pst_pdf_ceckout_page_button() {
    if ( current_user_has_role( array(\'administrator\', \'ABC\', \'LMN\', \'XYZ\') ) ) {
echo \'<a class="button bc-pst-pdf-btn" href="https://LINK TO FILE.pdf" target="_blank">PST Exempt PDF Form </a>\';
} 
}