How can I replace newline or \r\n with <br/>?

Question

I am trying to simply replace some new lines and have tried three different ways, but I don't get any change:

$description = preg_replace('/\r?\n|\r/', '<br/>', $description); $description = str_replace(array("\r\n", "\r", "\n"), "<br/>", $description); $description = nl2br($description); 

These should all work, but I still get the newlines. They are double: "\r\r". That shouldn't make any of these fail, right?

Answer 1

There is already the nl2br() function that inserts <br> tags before new line characters:

Example (codepad):

<?php // Won't work $desc = 'Line one\nline two'; // Should work $desc2 = "Line one\nline two";  echo nl2br($desc); echo '<br/>'; echo nl2br($desc2); ?> 

But if it is still not working make sure the text $desciption is double-quoted.

That's because single quotes do not 'expand' escape sequences such as \n comparing to double quoted strings. Quote from PHP documentation:

Note: Unlike the double-quoted and heredoc syntaxes, variables and escape sequences for special characters will not be expanded when they occur in single quoted strings.

Answer 2

Try using this:

$description = preg_replace("/\r\n|\r|\n/", '<br/>', $description);