Check whether a skin file actually exists

Question

I want to check if a file exists in any skin and thus the result of $block->getSkinUrl('foo.png') points to a valid URL.

How can I accomplish that?

Answer 1

This seems to work

/**
 * Get skin URL of image in language specific version - fall back to English (en)
 * @param $ressource string - %s for language
 */
public function getSkinUrlFallback($resource)
{
    $file = sprintf($resource, $this->getLang());
    $skinBase = Mage::getBaseUrl('skin', Mage::app()->getStore()->isCurrentlySecure());
    $skinUrl = $this->getSkinUrl($file);
    $path = str_replace($skinBase, '', $skinUrl);
    if (file_exists(Mage::getBaseDir('skin') . DS . $path)) {
        return $skinUrl;
    } else {
        $file = sprintf($resource, 'en');
        return $this->getSkinUrl($file);
    }
}