function ab_values($metric, $from, $to)
{
global $r;
//convert to unicode times
$ut_from = strtotime($from);
$ut_to = strtotime($to);
//calculate difference
$ut_diff = $ut_to - $ut_from;
$ut_diff_in_days = $ut_diff / 24 / 60 / 60;
//i am adding an extra day just to fix the bug.
//this whole function needs to be rewritten with proper math
$ut_diff_in_days += 1;
//if ($ut_diff_in_days > 90) $ut_diff_in_days = 90;
if ($ut_diff_in_days < 1) {
$ut_diff_in_days = 0;
}
$keys = array();
$dates = array();
$i = 0;
while ($i <= $ut_diff_in_days) {
$date_key = date("m-d-y", $ut_from + $i * 24 * 60 * 60);
$dates[] = $ut_from + $i * 24 * 60 * 60;
$keys[] = ab_key(array("metric", $metric, $date_key));
//add one day. this algorithm doesn't handle daylight savings time, etc. properly
$i++;
}
//print_r($keys);
$vals = $r->mget($keys);
//print_r($vals);
//print_r ($vals);
$result = array();
$i = 0;
foreach ($vals as $val) {
//echo $dates[$i] . " - ";
//$d = strtotime($dates[$i]);
//echo $d;
$result[] = array($dates[$i], (int) $val);
$i++;
}
//print_r($r);
return $result;
}
/**
* For the given test, return which alternative is currently forced.
*
* Return null if
*
* @param $test -- name of test as string
* @return String: name of alternative as string. null if no alternative
* is currently forced
*/
function ab_tests_get_forced_alternative($test)
{
global $r;
$key = ab_key(array('test', $test, 'force'));
$return = $r->get($key);
return $return;
}
