/**
* Returns the content from a given template
*
* @param string $template The template to use.
* @param array[optional] $variables The variabled to assign.
* @return string
*/
private static function getTemplateContent($template, $variables = null)
{
// new template instance
$tpl = new BackendTemplate(false);
// set some options
$tpl->setForceCompile(true);
// variables were set
if (!empty($variables)) {
$tpl->assign($variables);
}
// grab the content
$content = $tpl->getContent($template);
// replace internal links/images
$search = array('href="/', 'src="/');
$replace = array('href="' . SITE_URL . '/', 'src="' . SITE_URL . '/');
$content = str_replace($search, $replace, $content);
// require CSSToInlineStyles
require_once 'external/css_to_inline_styles.php';
// create instance
$cssToInlineStyles = new CSSToInlineStyles();
// set some properties
$cssToInlineStyles->setHTML($content);
$cssToInlineStyles->setUseInlineStylesBlock(true);
$cssToInlineStyles->setEncoding(SPOON_CHARSET);
// return the content
return (string) $cssToInlineStyles->convert();
}