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Adding Line Breaks; Easy way with PHP?
Topic Started: Jun 26 2005, 08:41 PM (450 Views)
Dennis Jun 26 2005, 08:41 PM Post #1
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 What is the easiest way to automagically(tm) add <br /> tags to each line break?

i.e. A user types a comment, and clicks enter, for a line break. Then when the comment is added, it automatically replaces the break with a <br /> tag.
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FearKiller Jun 26 2005, 10:04 PM Post #2
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www.drewscripts.com
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Code:
 
$message = nl2br($message);
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James Jun 27 2005, 04:09 AM Post #3
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 Wow. And i've been doing str_replace's on \n and \r\n for ages :)
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FearKiller Jun 27 2005, 03:46 PM Post #4
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www.drewscripts.com
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 Although that function exists I don't use it either. This is what I use to take care of line breaks.

Code:
 
$nl = array();
$nl[] = "/(\r\n|\n|\r)/";
$nl[] = "/\n\n+/";
$nl[] = "/\n/";

$br = array();
$br[] = "\n";
$br[] = "\n\n";
$br[] = '<br />';

$message = preg_replace($nl, $br, $message);


This better helps to prevent abuse as it stops users from putting multiple line breaks and creating





















large






















blank




























messages. :P
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Jeremy Jun 27 2005, 06:44 PM Post #5
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James
June 27, 2005 02:09 AM
Wow. And i've been doing str_replace's on \n and \r\n for ages :)

Depending on what you code for, that's the better method...

Code:
 
preg_replace("/(\n|\r\n)/", "<br />", $string);


That's what I use. If you need something to prevent multiple line breaks, there's an easier regular expression than what FearKiller mentioned, but I won't get into that, here. :)
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Dennis Jun 27 2005, 07:06 PM Post #6
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 @FK: I'll definitely use that, but in this case, it's only for a site news script, so I'm not really worried about people abusing it. So the nl2br function works for now.
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