/**
* Gets plain text for a given text
*
* @return	string
* @param	string $text
* @param	bool[optional] $includeAHrefs
* @param	bool[optional] $includeImgAlts
*/
function getPlainText($text, $includeAHrefs = false, $includeImgAlts = false)
{
	// remove tabs, line feeds and carriage returns
	$text = str_replace(array("\t", "\n", "\r"), '', $text);

	// remove the head-, style- and script-tags and all their contents
	$text = preg_replace('|\<head[^>]*\>(.*\n*)\</head\>|isU', '', $text);
	$text = preg_replace('|\<style[^>]*\>(.*\n*)\</style\>|isU', '', $text);
	$text = preg_replace('|\<script[^>]*\>(.*\n*)\</script\>|isU', '', $text);

	// put back some new lines where needed
	$text = preg_replace('#(\<(h1|h2|h3|h4|h5|h6|p|ul|ol)[^\>]*\>.*\</(h1|h2|h3|h4|h5|h6|p|ul|ol)\>)#isU', "\n$1", $text);

	// replace br tags with newlines
	$text = preg_replace('#(\<br[^\>]*\>)#isU', "\n", $text);

	// replace links with the inner html of the link with the url between ()
	// eg.: <a href="http://site.domain.com">My site</a> => My site (http://site.domain.com)
	if($includeAHrefs) $text = preg_replace('|<a.*href="(.*)".*>(.*)</a>|isU', '$2 ($1)', $text);

	// replace images with their alternative content
	// eg. <img src="path/to/the/image.jpg" alt="My image" /> => My image
	if($includeImgAlts) $text = preg_replace('|\<img[^>]*alt="(.*)".*/\>|isU', '$1', $text);

	// decode html entities
	$text = html_entity_decode($text, ENT_QUOTES, 'ISO-8859-15');

	// remove space characters at the beginning and end of each line and clear lines with nothing but spaces
	$text = preg_replace('/^\s*|\s*$|^\s*$/m', '', $text);

	// strip tags
	$text = strip_tags($text, '<h1><h2><h3><h4><h5><h6><p><li>');

	// format heading, paragraphs and list items
	$text = preg_replace('|\<h[123456]([^\>]*)\>(.*)\</h[123456]\>|isU', "\n** $2 **\n", $text);
	$text = preg_replace('|\<p([^\>]*)\>(.*)\</p\>|isU', "$2\n", $text);
	$text = preg_replace('|\<li([^\>]*)\>\n*(.*)\n*\</li\>|isU', "- $2\n", $text);

	// replace 3 and more line breaks in a row by 2 line breaks
	$text = preg_replace('/\n{3,}/', "\n\n", $text);

	// use php contant for new lines
	$text = str_replace("\n", PHP_EOL, $text);

	// trim line breaks at the beginning and ending of the text
	$text = trim($text, PHP_EOL);

	// return the plain text
	return $text;
}