using the multiple attribute on the select box

with ASP you can do this and it returns ALL selected values


Code:
<%@ Language=VBScript %>
<HTML><HEAD>
</HEAD>
<BODY>
<%
Dim s
s=request("fooditems")
response.write(s)

%>
<form actiopn=m.asp>
<select name='fooditems' size='4' multiple>
<Option value=1>option1</option>
<Option value=2>option2</option>
<Option value=3>option3</option>
<Option value=4>option4</option>
<Option value=5>option5</option>
<Option value=6>option6</option>
<Option value=7>option7</option>
<Option value=8>option8</option>
<Option value=9>option9</option>
</select>
<input type='submit'>
</form>
</BODY></HTML>
How do I do the same in PHP?

Thanks