Replace carriage return in an email

Question

I'm trying to replace carriage returns with a line break in PHP so that my site moderators don't have to type
every time they want to add a new line when typing an email from my site. I've tried several different methods to replace the line breaks but none have worked. The methods that I have tried are:

preg_replace('/\r\n?/', "<br />", $str);
eregi_replace(char(13), "<br />", $str);
str_replace("\r\n", "<br />", $str);
str_replace("\n", "<br />", $str);

and the nl2br function.

I've looked for the answer on Google for about half an hour and haven't found anything. Can anyone help?

`nl2br` should have worked, there must be another problem somewhere. — Maerlyn, Jul 30 '12 at 14:22
Did you just write those lines or did you set $str equal to it, too? $str = str_replace("\n", "
", $str); or $str = nl2br($str); — Summoner, Jul 30 '12 at 14:22
I wrote them like this: $str = str_replace("\n", "
", $str); — JustSomeGuy, Jul 30 '12 at 14:28
`ereg_*` and `eregi_*` functions are deprecated. Don't use them! — Florent, Jul 30 '12 at 14:32

score 2 · Answer 1 · answered Jul 30 '12 at 14:35

Quite good example from php.net documentation

// Order of replacement
$str     = "Line 1\nLine 2\rLine 3\r\nLine 4\n";
$order   = array("\r\n", "\n", "\r");
$replace = '<br />';

// Processes \r\n's first so they aren't converted twice.
$newstr = str_replace($order, $replace, $str);

Peon · Answer 2 · 2012-07-31T06:23:01.717

1

Did you test it like this?

$str = str_replace( "\r\n", "<br />", $str );
$str = str_replace( "\r", "<br />", $str );
$str = str_replace( "\n", "<br />", $str );

This should work pretty much always. And remember always use "\r" instead of '\r'.

edited Jul 31 '12 at 06:23

answered Jul 30 '12 at 14:26

Peon

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Careful, you might end up replacing Windows line endings `"\r\n"` with two `
` tags here. – nickb Jul 30 '12 at 14:29
Thanx, altered the script, to check for doubles first. – Peon Jul 31 '12 at 06:23

score 1 · Answer 3 · answered Jul 30 '12 at 14:28

1

Your regular expression is escaping your r and n.

Instead of

preg_replace('/\r\n?/', "<br />", $str);

Try this:

preg_replace('/\\r\\n/', "<br />", $str);

answered Jul 30 '12 at 14:28

Matt

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Replace carriage return in an email

3 Answers3

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