eregi_replace Problem

[RobHudson]

Does anybody know why this works on my pc and not on someone elses??

$article = "Click Here";
$article = eregi_replace(&quot;\\*)\\]([^\\[]*)\\[/url\\]&quot;,&quot;<a href=\&quot;[URL unfurl="true"]http://\\1\&quot; target=\&quot;_new\&quot;>\\2</a>&quot;,$article);

It should take &quot;Click Here and make it <a href=&quot;

http://www.hello.com/gohere/broke.html&quot;>Click

Here</a>

Like I say this works fine for me but not elsewhere - does it work on yours?? Any ideas why it might not be working??

Cheers
Rob