public static function getKeywords($searchterm)
{
$hits = NULL;
// if the static variable $ch is not initialized yet, do it now
if (!isset(self::$ch)) {
self::$ch = curl_init();
}
// Set our curl options for this request
curl_setopt(self::$ch, CURLOPT_URL, 'http://clients1.google.com/complete/search?hl=en&gl=us&q=' . urlencode(trim($searchterm)));
curl_setopt(self::$ch, CURLOPT_RETURNTRANSFER, TRUE);
// Run the curl request
$fc = curl_exec(self::$ch);
// Filter out the Google Javascript API wrapping
if (preg_match('/window.google.ac.h\\((.+?)\\)/', $fc, $results)) {
// Decode the array as JSON
$content = json_decode($results[1]);
// Loop through each search result
foreach ($content[1] as $result) {
// Strip the commas and " results" from the number of hits returned
$value = str_replace(array(',', ' results'), '', $result[1]);
// Create a key in $hits named by the search result, with the number of hits as the value
$hits[$result[0]] = $value;
}
// Confirm we actually found hits
if (is_array($hits)) {
// Sort the array by the number of hits, as a number, in reverse order
arsort($hits, SORT_NUMERIC);
return $hits;
} else {
return false;
}
} else {
return false;
}
}
