On Thu, 10 Aug 2006 17:17:23 -0500, Richard Lynch wrote:
> On Tue, August 8, 2006 3:47 pm, Fokkema, I.F.A.C. \(HKG\) wrote:
>>>> If the user separates the dates by an enter in the textarea, you
>>>> need
>>>> to
>>>> explode on "\r\n". To be able to handle both, you need to use
>>>> split()
>>>> or
>>>> preg_split().
>>>>
>>>>
>>>> When I use
>>>> $datelist=$_POST[datelist];
>>>> $string=explode('\r\n',$datelist);
>>>
>>> '\r\n' and "\r\n" are not anything alike...
>>>
>>> \r\n only have special meaning inside of ", not '
>>>
>>> If you want to cover all browser/OS combinations, you'd want to
>>> pre-treat the text area input like:
>>> $datelist = $_POST['datelist'];
>>> $datelist = str_replace("\r\n", "\r", $datelist);
>>> $datelist = str_replace("\r", "\n", $datelist);
>>>
>>> Now all the date are separated by "\n" and you can reliably use
>>> explode("\n", $datelist); on them.
>>
>> Actually, I know that both Windows and Linux send a linebreak in a
>> textarea as "\r\n", not "\n". I assume it's all the same for all
>> platforms, and that Mac would send "\r\n", too.
>
> Actually, I know that it's browser/OS dependent, cuz I had a bunch of
> Mac users who sent only \r all the time.
>
> This may be true only of OS 9, and you may not care about them
> anymore, but there it is.
>
> I also would not be so quick to claim that Linux sends \r\n -- It
> could be dependent on the browser, the OS version, the OS distro, some
> OS settings, ...
I've tested this on different distros and browsers, all had sent \r\n and
in years I've not had any problems with not receiving \r\n. But I did some
extensive searching, and I found this in the W3C specifications:
"Line breaks, as in multi-line text field values, are represented as "CR
LF" pairs, i.e., `%0D%0A'."
(http://www.w3.org/TR/WD-html40-970917/interact/forms.html)
> Better safe than sorry, and I *know* I ran into this with some Mac users.
>
> Plus I hate trying to edit the text chunks in vi with those icky \r
> thingies that turn into ^M :-)
Well, if it's true that some browsers on some platforms ignore the W3C
standard, I guess we could use:
$datelist = str_replace(array("\r\n","\n","\r"),'<BR>',$_POST['datelist']);
Ivo
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