how to manipulate CRLF in php?

Question

Let us say I have string like below $comments = Windows Embedded Compact (Windows CE) or Windows Server. Defunct Windows families include Windows 9x and Windows Mobile. [CR][LF] [CR][LF] Microsoft introduced an operating environment named Windows on November 20, 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs).

Note: [CR][LF] are manually added for the question. I found this issue when any user copy and paste any html content in the comments rich text area box we are observing these elements.

Is there way where we can replace these with \n\r in PHP.

I tried something like this

$comments = preg_replace("/\r\n\r\n|\r\r|\n\n/", "<br />", $comments);

it didn't give me any proper result.

You can use `'~\R~'` and replace with `\n\r` if you plan to replace each newline sequence with `\n\r`. — Wiktor Stribiżew, Jan 20 '16 at 11:58
Your requirements are unclear. Please update the question stating what you need to replace with what. I do not know what "proper" result you expect. — Wiktor Stribiżew, Jan 20 '16 at 12:06
Could you please give us some feedback on you tried and what was the result? — hherger, Jan 20 '16 at 18:48
Good. Still, future readers do not know what exactly your issue looked like. — Wiktor Stribiżew, Jan 21 '16 at 09:50

hherger · Accepted Answer · 2016-01-20T12:30:03.683

0

Assuming you want to replace any combinations of [CR] and [LF] by [CR][LF] (i.e. \r\n, not \n\r), try this:

$string = ".....[CR].....[LF]...[CR][LF].....[CR][CR].......[LF][LF].......";
$result = preg_replace('/\r\n|\n\r|\r|\n/', '\r\n', $string);

edited Jan 20 '16 at 12:30

answered Jan 20 '16 at 12:17

hherger

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@Wiktor: Thanks - you are right. I'll update the example. – hherger Jan 20 '16 at 12:26
Still, it is not clear if your answer is correct or not, since the question is unclear. – Wiktor Stribiżew Jan 20 '16 at 12:29
@WiktorStribiżew: If my string is having such kind of characters i want to escape them before sending the request to the API.Please let me know if my question is still unclear. I will improve myself in providing the right question – Krishna Jan 20 '16 at 13:04

how to manipulate CRLF in php?

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