What is the PHP equivalent of GetUrl in Actionscript? 1

[Roon4660]

What is the PHP equivalent of GetUrl in Actionscript? Perhaps it would be helpful to know the syntax too. I think if I just know this I will finally be able to make my preview button for my Ecard system work.

 

[wangbar]

$URL="[URL unfurl="true"]http://www.somedomain.com/";[/URL]
header ("Location: $URL");