Answers for "php replace \n"

php replace \n by <br>

$var = str_replace(array("\r\n","\n"),'<br>', $var);

php replace return character

$string = str_replace("\n", "", $string);
$string = str_replace("\r", "", $string);

php replace

str_replace ($search, $replace, $subject);

nl2br() php

// add to the functions file
function translateLineBreaks($string) {
	$result = nl2br ($string);
  	return $result;
}