Get each line from textarea

<textarea> put returns between paragraphs
for linebreak add 2 spaces at end
indent code by 4 spaces
quote by placing > at start of line
</textarea>

$text = value from this textarea;

How to:

1) Get each line from this textarea ($text) and work with them using foreach()?

2) Add
to the end of each line, except the last one?

3) Throw each line to an array.

Important - text inside textarea can be multilanguage.

Have tried to use:

$text = str_replace('\n', '<br />', $text);

But it doesn't work.

Thanks.