STARIKOVS

Here’s an example of how to convert new line (LF – line feed, ‘\n’) or carriage return (CR, ‘\r’) followed by new line (CR+LF, ‘\r\n’) to
or

. In case of double or more breaks we’ll get a paragraph but in case of one break we’ll have
.

$text = 'Lorem ipsum\r\n\r\ndolor sit\r\namet.';
// double or more nl to 

$text = preg_replace('/(\r?\n){2,}/', '
', $text);
// nl to 

$text = preg_replace('/(\r?\n)+/', '
', $text);
echo '
' . $text . '';

output:

Lorem ipsum

dolor sit
amet.