Creating custom Zend View helpers I often end up with something like:

// logic here
if ($condition) {
    $output = <<<EOS...
} else {
    $output = <<<EOS...
}

or using switch.

Then to eliminate this, I create setPartial(), getPartial() and htmlize() for using external .phtml's.

This is not the best solution, because partials do not support doctype changing.

• Is there any better solution, than creating abstract class handling this common case?
• Are there any ready Zend solutions for this case?
• Separate view helper for each case? And where to put common code?