static function resetTime() {
self::$_delta = 0;
}
+
+ /**
+ * Approximate time-comparison. $a and $b are considered equal if they
+ * are within $threshold seconds of each other.
+ *
+ * @param string $a time which can be parsed by strtotime
+ * @param string $b time which can be parsed by strtotime
+ * @param int $threshold maximum allowed difference (in seconds)
+ * @return bool
+ */
+ static function isEqual($a, $b, $threshold = 0) {
+ $diff = strtotime($b) - strtotime($a);
+ return (abs($diff) <= $threshold);
+ }
}