PHP: wordwrap

PHP has so many functions available that it's very easy to overlook some of them. In my case one of these functions is wordwrap which I'd never heard of until just recently. This function will wrap a string to a given number of characters using a user-defined line-break string (or just \n by default) at natural word breaks (spaces). For example:

$text = "supercalafragilisticexpealadocious is a very long word";
$newtext = wordwrap($text, 18, "<br />\n");

echo $newtext;

This returns the following.

supercalafragilisticexpealadocious<br />
is a very long<br />
word

Notice how the first word is longer than the specified maximum of 18 characters, but is not broken. This default behavior can be turned off by specifying an optional 4th parameter as follows:

$text = "supercalafragilisticexpealadocious is a very long word";
$newtext = wordwrap($text, 18, "<br />\n",true);

echo $newtext;

This forces any word longer than the 18-character maximum to break at 18 characters:

supercalafragilist<br />
icexpealadocious<br />
is a very long<br />
word