how to remove multiple line breaks?

[Jon LaRosa]

I'm am trying to remove multiple line breaks ("\n"). Here's my code:

$imageStr = trim($_POST['images']);
$imageStr = str_replace("\n \n", "\n", $imageStr);

----------

$_POST['images'] is a textarea field, and I am trying to remove extra
hard returns that a user types into the text area.

When I change the code to:
$imageStr = str_replace("\n ", "%", $imageStr);
it works fine. So I know the function works and I have the right
character ("\n").

Anyone know what I'm doing wrong?
thanks much,
jon
jlarosa at alumni dot brown dot edu

[Ken Robinson]

Re: how to remove multiple line breaks?


Jon LaRosa wrote:[color=blue]
> I'm am trying to remove multiple line breaks ("\n"). Here's my code:
>
> $imageStr = trim($_POST['images']);
> $imageStr = str_replace("\n \n", "\n", $imageStr);
>
> ----------
>
> $_POST['images'] is a textarea field, and I am trying to remove extra
> hard returns that a user types into the text area.
>
> When I change the code to:
> $imageStr = str_replace("\n ", "%", $imageStr);
> it works fine. So I know the function works and I have the right
> character ("\n").[/color]

How do you know it's NOT working??

What happens if you do $imageStr = str_replace("\n \n", "%",
$imageStr);?

Do two "\n"s get replaced by one "%"?

Ken

[Pedro Graca]

Re: how to remove multiple line breaks?

Jon LaRosa wrote:[color=blue]
> I'm am trying to remove multiple line breaks ("\n"). Here's my code:
>
> $imageStr = trim($_POST['images']);[/color]

/* while there are double line breaks in $imageStr */
while (strpos($imageS tr, "\n\n") !== false) {

/* replace one such double line break by a single one */[color=blue]
> $imageStr = str_replace("\n \n", "\n", $imageStr);[/color]

}

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== ** ## !! ------------------------------------------------ !! ## ** ==
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[Justin Koivisto]

Re: how to remove multiple line breaks?

Jon LaRosa wrote:
[color=blue]
> I'm am trying to remove multiple line breaks ("\n"). Here's my code:
>
> $imageStr = trim($_POST['images']);
> $imageStr = str_replace("\n \n", "\n", $imageStr);
>
> ----------
>
> $_POST['images'] is a textarea field, and I am trying to remove extra
> hard returns that a user types into the text area.
>
> When I change the code to:
> $imageStr = str_replace("\n ", "%", $imageStr);
> it works fine. So I know the function works and I have the right
> character ("\n").
>
> Anyone know what I'm doing wrong?
> thanks much,
> jon
> jlarosa at alumni dot brown dot edu
>[/color]

$string=preg_re place('`[\r\n]+`',"\n",$strin g);

--
Justin Koivisto - spam@koivi.com

http://www.koivi.com

[Michael Fesser]

Re: how to remove multiple line breaks?

.oO(Pedro Graca)
[color=blue]
>/* while there are double line breaks in $imageStr */
>while (strpos($imageS tr, "\n\n") !== false) {[/color]

IMHO it would be much easier to use a regular expression instead.

Micha

[Pedro Graca]

Re: how to remove multiple line breaks?

Pedro Graca wrote:[color=blue]
> /* while there are double line breaks in $imageStr */
> while (strpos($imageS tr, "\n\n") !== false) {
>
> /* replace one such double line break by a single one */[/color]

Oops: wrong comment. Should have been:

/* replace as many such double line breaks as possible
by a single one */[color=blue][color=green]
>> $imageStr = str_replace("\n \n", "\n", $imageStr);[/color]
>
> }[/color]


--
Mail to my "From:" address is readable by all at http://www.dodgeit.com/
== ** ## !! ------------------------------------------------ !! ## ** ==
TEXT-ONLY mail to the whole "Reply-To:" address ("My Name" <my@address>)
may bypass my spam filter. If it does, I may reply from another address!

[Chung Leong]

Re: how to remove multiple line breaks?

"Jon LaRosa" <jlarosa@alumni .brown.edu> wrote in message
news:1102618971 .322599.173990@ f14g2000cwb.goo glegroups.com.. .[color=blue]
> I'm am trying to remove multiple line breaks ("\n"). Here's my code:
>
> $imageStr = trim($_POST['images']);
> $imageStr = str_replace("\n \n", "\n", $imageStr);
>
> ----------
>
> $_POST['images'] is a textarea field, and I am trying to remove extra
> hard returns that a user types into the text area.
>
> When I change the code to:
> $imageStr = str_replace("\n ", "%", $imageStr);
> it works fine. So I know the function works and I have the right
> character ("\n").
>
> Anyone know what I'm doing wrong?
> thanks much,
> jon
> jlarosa at alumni dot brown dot edu[/color]

Linefeeds coming from the browser are "\r\n", which is why your replacement
code doesn't work. Use the snippet from Justin.