php form textarea saving to file: ^M problem

[Martin Herrman]

Dear programmers,

I have a form:

<form action=".." method="post">
<textarea name="text1"></textarea>
</form>

And a php file that saves this variable to a file:

$fp = fopen("file.txt",a);
fwrite($fp,$_POST[text1]);
fclose($fp);

When I fill the textarea with the following text:

1,2,
3,

4.

In the file, the following appears (reading the file with Midnight
Commander on Linux):

1,2,^M
3,^M
^M
4.

In a new script, I want to parse this file. Every empty line should be
detected. How should I do that? if ($line == "\n") { .. } doesn't work,
because the line actualy contains ^M\n. When saving the contents of the
textarea to the file, I don't know how to strip the ^M characters.

Any ideas?

much thanks in advance!

Martin
(The Netherlands)

[B. Johannessen]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Martin Herrman wrote:

In a new script, I want to parse this file. Every empty line should be
detected. How should I do that? if ($line == "\n") { .. } doesn't work,
because the line actualy contains ^M\n. When saving the contents of the
textarea to the file, I don't know how to strip the ^M characters.

How about if("\r\n" == $line) { ... }
Bob
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Comment: B. Johannessen <bo*@db.org> - http://db.org/contact/en/

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[André Næss]

Martin Herrman:

Dear programmers,

I have a form:

<form action=".." method="post">
<textarea name="text1"></textarea>
</form>

And a php file that saves this variable to a file:

$fp = fopen("file.txt",a);
fwrite($fp,$_POST[text1]);
fclose($fp);

When I fill the textarea with the following text:

1,2,
3,

4.

In the file, the following appears (reading the file with Midnight
Commander on Linux):

1,2,^M
3,^M
^M
4.

In a new script, I want to parse this file. Every empty line should be
detected. How should I do that? if ($line == "\n") { .. } doesn't work,
because the line actualy contains ^M\n. When saving the contents of the
textarea to the file, I don't know how to strip the ^M characters.

In case you didn't know, unix uses \n for newlines, Mac uses \r (older macs
anyway, OSX is based on FreeBSD and uses \n) and Windows uses \r\n.

I'd suggest making sure that newlines are always represented the same,
regardless of what system the data was typed in on. The simplest way to
achieve this is probably to do a str_replace(). You want to first replace
any \r\n with \n, then any \r with \n. Thus:

str_replace(Array("\r\n", "\r"), "\n", $input);

Do this just before you write the data to file.

André næss

[Chung Leong]

if(!trim($line)) { ...

Uzytkownik "Martin Herrman" <m.*******@student.tue.nl> napisal w wiadomosci
news:pa****************************@student.tue.nl ...

Dear programmers,

I have a form:

<form action=".." method="post">
<textarea name="text1"></textarea>
</form>

And a php file that saves this variable to a file:

$fp = fopen("file.txt",a);
fwrite($fp,$_POST[text1]);
fclose($fp);

When I fill the textarea with the following text:

1,2,
3,

4.

In the file, the following appears (reading the file with Midnight
Commander on Linux):

1,2,^M
3,^M
^M
4.

In a new script, I want to parse this file. Every empty line should be
detected. How should I do that? if ($line == "\n") { .. } doesn't work,
because the line actualy contains ^M\n. When saving the contents of the
textarea to the file, I don't know how to strip the ^M characters.

Any ideas?

much thanks in advance!

Martin
(The Netherlands)