convert this code from asp to php (date related)

Hey guys,

Im wanting to have this bit of code rewritten into PHP.

It basically checks the date pulled from the DB and if its only 2 days old, it displays a "new listing" image.

<%share_newlisting = DateDiff("d", rstDBEdit("share_datecreated"), now())
			if share_newlisting < 2 then%>
            <div style="margin-top:5px"><img src="/images/new_listing.gif" width="81" height="15" align="absbottom"></div>
            <%end if%>