WB 2.08.x

	$search_string = implode("|", $arr_string);

	$string = entities_to_umlauts($search_string, 'UTF-8');

	$string = strtr($string, $string_ul_umlauts);

	$foo = preg_replace('/('.$string.')(?=[^>]*<)/iUS', '<span class="highlight">$1</span>',$foo);

	$pos = strpos($foo, '<');

	if ($pos === false) { // "===" means identicaly

		$foo = preg_replace('/('.$string.')/i', '<span class="highlight">$1</span>',$foo);

	}

	return $foo;

}

		'Á'=>'Á','á'=>'á',

		'Â'=>'Â','â'=>'â','´'=>'´','Æ'=>'Æ','æ'=>'æ',

		'À'=>'À','à'=>'à','ℵ'=>'ℵ','Α'=>'Α','α'=>'α',

		'≈'=>'≈','Ã'=>'Ã','ã'=>'ã','Ä'=>'Ä','ä'=>'ä',

		'„'=>'„','Β'=>'Β','β'=>'β','¦'=>'¦','•'=>'•',

		'∩'=>'∩','Ç'=>'Ç','ç'=>'ç','¸'=>'¸','¢'=>'¢',

		'Η'=>'Η','η'=>'η','Ð'=>'Ð','ð'=>'ð','Ë'=>'Ë','ë'=>'ë',

		'€'=>'€','∃'=>'∃','ƒ'=>'ƒ','∀'=>'∀','½'=>'½',

		'¼'=>'¼','¾'=>'¾','⁄'=>'⁄','Γ'=>'Γ','γ'=>'γ',

		'…'=>'…','Í'=>'Í','í'=>'í','Î'=>'Î','î'=>'î',

		'¡'=>'¡','Ì'=>'Ì','ì'=>'ì','ℑ'=>'ℑ','∞'=>'∞',

		'∫'=>'∫','Ι'=>'Ι','ι'=>'ι','¿'=>'¿','∈'=>'∈',

		'Ï'=>'Ï','ï'=>'ï','Κ'=>'Κ','κ'=>'κ','Λ'=>'Λ',

		'λ'=>'λ','⟨'=>'〈','«'=>'«','⇐'=>'⇐','←'=>'←',

		'⌈'=>'⌈','“'=>'“','≤'=>'≤','⌊'=>'⌊','∗'=>'∗',

		'¯'=>'¯','—'=>'—','µ'=>'µ','·'=>'·','−'=>'−',

		'Μ'=>'Μ','μ'=>'μ','∇'=>'∇',' '=>' ','–'=>'–',

		'≠'=>'≠','∋'=>'∋','¬'=>'¬','∉'=>'∉','⊄'=>'⊄',

	$numbered_to_named_entities=array(

		'Á'=>'Á','á'=>'á','Â'=>'Â','â'=>'â','´'=>'´',

		'Æ'=>'Æ','æ'=>'æ','À'=>'À','à'=>'à','ℵ'=>'ℵ',

		'''=>''','Å'=>'Å','å'=>'å','≈'=>'≈','Ã'=>'Ã',

		'ã'=>'ã','Ä'=>'Ä','ä'=>'ä','„'=>'„','Β'=>'Β',

		'β'=>'β','¦'=>'¦','•'=>'•','∩'=>'∩','Ç'=>'Ç',

		'Ð'=>'Ð','ð'=>'ð','Ë'=>'Ë','ë'=>'ë','€'=>'€',

		'∃'=>'∃','ƒ'=>'ƒ','∀'=>'∀','½'=>'½','¼'=>'¼',

		'¾'=>'¾','⁄'=>'⁄','Γ'=>'Γ','γ'=>'γ','≥'=>'≥',

		'Í'=>'Í','í'=>'í','Î'=>'Î','î'=>'î','¡'=>'¡',

		'Ì'=>'Ì','ì'=>'ì','ℑ'=>'ℑ','∞'=>'∞','∫'=>'∫',

		'Ι'=>'Ι','ι'=>'ι','¿'=>'¿','∈'=>'∈','Ï'=>'Ï',

		'ï'=>'ï','Κ'=>'Κ','κ'=>'κ','Λ'=>'Λ','λ'=>'λ',

		'〈'=>'⟨','«'=>'«','⇐'=>'⇐','←'=>'←','⌈'=>'⌈',

		'“'=>'“','≤'=>'≤','⌊'=>'⌊','∗'=>'∗','◊'=>'◊',

		'—'=>'—','µ'=>'µ','·'=>'·','−'=>'−','Μ'=>'Μ',

		'μ'=>'μ','∇'=>'∇',' '=>' ','–'=>'–','≠'=>'≠',

		'∋'=>'∋','¬'=>'¬','∉'=>'∉','⊄'=>'⊄','Ñ'=>'Ñ',

		// decode html-entities

		if(preg_match("/&[#a-zA-Z0-9]+;/", $string)) {

			$string=string_decode_encode_entities($string, 'UTF-8', 'HTML-ENTITIES');

		}

	}

	else {

			$string=utf8_encode($string);

		}

		// encode html-entities

	}

	else {

		$string = string_to_utf8($string, $charset_in);

		// encode html-entities

		if (is_UTF8($string)) {

		}

	}

	return $string;