foreach results as feed_url - php

Question

I'm trying to get the result of my foreach loop into an url to do a simplexml_load_file with.
So it goes like this:
(...) //SimpleXML_load_file to get $feed1
$x=1;
$count=$feed1->Count; //get a count for total number of loop from XML
foreach ($feed1->IdList->Id as $item1){
echo $item1;
if($count > $x) {
echo ',';} //Because I need coma after every Id, except the last one.
$x++;
}
The two echo are just to see the result. It gives me something like:
22927669,22039496,21326191,18396266,18295747,17360921,15705350,15681025,15254092,12939407,11943825,11495650,10964843
I would like to put that in a url to make a simplexml_load_file just like that
$feed_url = 'http://www.whatevergoeshere'. $RESULT_OF_FOREACH . 'someothertext';
So it would look like:
$feed_url = 'http://www.whatevergoeshere22927669,22039496,21326191,18396266,18295747,17360921,15705350,15681025,15254092,12939407,11943825,11495650,10964843someothertext';
I've try to store it into an array or a function and then call it into the feed_url but it did not work the way I tried it.
I hope it's clear, I'll answer fast to questions if not.
Thanks.

Answer 1

It's really difficult to make out what you want, so I'm going to guess you want to store the list as a comma delimited string in a variable. the easiest way is to implode the array of ids
$ids = array();
foreach ($feed1->IdList->Id as $item1){
$ids[] = (string) $item1;
}
$RESULT_OF_FOREACH = implode(',', $ids);
$feed_url = 'http://www.whatevergoeshere'. $RESULT_OF_FOREACH . 'someothertext';