<?php
function nl2br_nopre($string, $wrap = 40) {

	$tag = 'pre';
	
	preg_match_all("/<".$tag."[^>]*?>(.|\n)*?<\/".$tag.">/", $string, $pre1);
	
	for ($x = 0; $x < count($pre1[0]); $x++) {
		$pre2[$x] = preg_replace("/\s*<br[^>]*?>\s*/", "
", $pre1[0][$x]);
		$pre2[$x] = preg_replace("/([^\n]{".$wrap."})(?!<\/".$tag.">)(?!\n)/", "$1\n", $pre2[$x]);
		$pre1[0][$x] = "/".preg_quote($pre1[0][$x], "/")."/";
	}
	
	$string = preg_replace($pre1[0], $pre2, $string);
		
	return $string;

}

function nl2br_notable($string, $wrap = 40) {
	
	$tag = 'table';
	
	preg_match_all("/<".$tag."[^>]*?>(.|\n)*?<\/".$tag.">/", $string, $pre1);
	
	for ($x = 0; $x < count($pre1[0]); $x++) {
		$pre2[$x] = preg_replace("/\s*<br[^>]*?>\s*/", "
", $pre1[0][$x]);
		$pre2[$x] = preg_replace("/([^\n]{".$wrap."})(?!<\/".$tag.">)(?!\n)/", "$1\n", $pre2[$x]);
		$pre1[0][$x] = "/".preg_quote($pre1[0][$x], "/")."/";
	}
	
	$string = preg_replace($pre1[0], $pre2, $string);
		
	return $string;

}

function nl2br_noul($string, $wrap = 40) {
	
	$string = nl2br($string);
	
	$tag = 'ul';
	
	preg_match_all("/<".$tag."[^>]*?>(.|\n)*?<\/".$tag.">/", $string, $pre1);
	
	for ($x = 0; $x < count($pre1[0]); $x++) {
		$pre2[$x] = preg_replace("/\s*<br[^>]*?>\s*/", "
", $pre1[0][$x]);
		$pre2[$x] = preg_replace("/([^\n]{".$wrap."})(?!<\/".$tag.">)(?!\n)/", "$1\n", $pre2[$x]);
		$pre1[0][$x] = "/".preg_quote($pre1[0][$x], "/")."/";
	}
	
	$string = preg_replace($pre1[0], $pre2, $string);
		
	return $string;

}

function enter2br($string) {

	return nl2br_nopre(nl2br_notable(nl2br_noul($string)));

}


?>