问题
Certain fields in our mysql db appear to contain newline characters so that if I SELECT on them something like the following will be returned for a single SQL call:
Life to be sure is nothing much to lose
But young men think it is and we were young
If I want to preserve the line breaks when displaying this field on a webpage, is the standard solution to write a script to replace '\n\r' with a br HTML tag or is there a better way?
Thanks!
回答1:
Assuming PHP here...
nl2br() adds in <br /> for every \n. Don't forget to escape the content first, to prevent XSS attacks. See below:
<?php echo nl2br(htmlspecialchars($content)); ?>
回答2:
HTML is a markup language. Regardless of how many linebreaks you put in the source code, you won't see anything from it back in the presentation (of course assuming you aren't using <pre> or white-space:pre). HTML uses the <br> element to represent a linebreak. So you basically indeed need to convert the real and invisible linebreaks denoted by the characters xA (newline, linefeed, LF, \n) and/or xD (carriage return, CR, \r) by a HTML <br> element.
In most programming languages you can just do this by a string replace of "\n" by "<br>".
回答3:
You can wrap it in <pre> .. </pre>.
来源：https://stackoverflow.com/questions/1882754/display-mysql-newline-in-html