(PHP 4, PHP 5)
nl2br — Inserts HTML line breaks before all newlines in a string
$string
   [, bool $is_xhtml = true
  ] )
   Returns string with '<br />' or 
   '<br>' inserted before all newlines (\r\n,
   \n\r, \n and \r).
  
stringThe input string.
is_xhtmlWhether to use XHTML compatible line breaks or not.
Returns the altered string.
Example #1 Using nl2br()
<?php
echo nl2br("foo isn't\n bar");
?>
The above example will output:
foo isn't<br /> bar
Example #2 Generating valid HTML markup using the is_xhtml parameter
<?php
echo nl2br("Welcome\r\nThis is my HTML document", false);
?>
The above example will output:
Welcome<br> This is my HTML document
Example #3 Various newline separators
<?php
$string = "This\r\nis\n\ra\nstring\r";
echo nl2br($string);
?>
The above example will output:
This<br /> is<br /> a<br /> string<br />
| Version | Description | 
|---|---|
| 5.3.0 | Added the optional is_xhtmlparameter. Before
         this version '<br />' was always inserted. |