Loop while changing the name of a variable - php

Question

Using FaceBook PHP SDK, when I want to get the next page of results I call something along the likes of $next = $fb->next($response). Now for the next page, I would have to call $next2 = $fb->next($next). I want to put this into a loop as obviously, I will never know beforehand how many times to execute this until I get through all the pages of results. When there are no more pages, the $fb->next() call will = null.
Here is an example without a loop:
$reactions = array();
$response = $response->getGraphEdge();
foreach ($response as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
$next = $fb->next($response);
foreach ($next as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
$next2 = $fb->next($next);
foreach ($next2 as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
$next3 = $fb->next($next2);
foreach ($next2 as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
print_r($reactions);

Answer 1

I was over-complicating this.. I didnt account for the fact that if I keep the variable name the same it gets updated on each iteration of a loop. So this worked:
$reactions = array();
$response = $response->getGraphEdge();
if ($fb->next($response) == null) {
foreach ($response as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
}else {
foreach ($response as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
while ($response = $fb->next($response)) {
foreach ($response as $reaction) {
$reactions[] = $reaction['name'] . " - " . $reaction['type'];
}
}
}
echo "<pre>";
print_r($reactions);
echo "</pre>";