The following will output a list of all the category names in PHP:
<?php
$results = @file_get_contents("http://www.jobs.cam.ac.uk/?format=json");
if($results) {
$results = json_decode($results);
if(isset($results->lists) && count($results->lists) > 0) {
echo "<ul>\n";
foreach($results->lists as $list) {
echo "<li>".$list->name." (".$list->jobs." listed)</li>\n";
}
echo "</ul>\n";
} else {
echo "<p>No categories.</p>\n";
}
} else {
echo "<p>Unable to load categories.</p>\n";
}