Block/Adminhtml/System/Config/Fieldset/Logo.php
public function render(AbstractElement $element) {
        $pattern    = '<div id="checkout_com_adminhtml_logo"><a href="%s" target="_blank"><img src="%s" alt="Checkout.com Logo"></a></div>';
        $url        = 'https://checkout.com';
        $src        = 'https://cdn.checkout.com/img/checkout-logo-online-payments.jpg';

        return sprintf($pattern, $url, $src);
    }
public function render(AbstractElement $element) {
        $pattern    = '<div id="checkout_com_adminhtml_logo"><a href="%s" target="_blank"><img src="%s" alt="Checkout.com Logo"></a></div>';
        $url        = 'https://checkout.com';
        $src        = 'https://cdn.checkout.com/img/checkout-logo-online-payments.jpg';

        return sprintf($pattern, $url, $src);
    }
public function render ( AbstractElement $ element ) { $ pattern = '<div id="checkout_com_adminhtml_logo"><a href="%s" target="_blank"><img src="%s" alt="Checkout.com Logo"></a></div>' ; $ url = 'https://checkout.com' ; $ src = 'https://cdn.checkout.com/img/checkout-logo-online-payments.jpg' ; return sprintf ( $ pattern , $ url , $ src ) ; }
Renders form element as HTML

@param AbstractElement $element
@return string
Renders form element as HTML