WC_Gateway_Paypal::get_icon PHP Method

    public function get_icon()
    {
        $icon_html = '';
        $icon = (array) $this->get_icon_image(WC()->countries->get_base_country());
        foreach ($icon as $i) {
            $icon_html .= '<img src="' . esc_attr($i) . '" alt="' . esc_attr__('PayPal acceptance mark', 'woocommerce') . '" />';
        }
        $icon_html .= sprintf('<a href="%1$s" class="about_paypal" onclick="javascript:window.open(\'%1$s\',\'WIPaypal\',\'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=1060, height=700\'); return false;">' . esc_attr__('What is PayPal?', 'woocommerce') . '</a>', esc_url($this->get_icon_url(WC()->countries->get_base_country())));
        return apply_filters('woocommerce_gateway_icon', $icon_html, $this->id);
    }