Wordpress: split the_content into parts at more-shortcode

wordpress-split-content-at-more-shortcode.php

function atz_split_content_at_more(){
	// Split the content
	$content_parts = preg_split('/<span id="more-\d+"><\/span>/i', get_the_content());
	
	// Grab first part of content and apply filters
	$result['intro'] = apply_filters('the_content', array_shift($content_parts));;
	
	// Content has a more part?
	if(!empty($content_parts)):
		$result['more'] = apply_filters('the_content', implode($content_parts));
	endif;
	
	return $result;
}