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<?php
class Date {
public static function torelative($date) {
	$diff = strtotime('-1 day') - strtotime($date);
	if ($diff>0) {
		if ($diff<60)
			return $diff . " second" . self::plural($diff) . " ago";
		$diff = round($diff/60);
		if ($diff<60)
			return $diff . " minute" . self::plural($diff) . " ago";
		$diff = round($diff/60);
		if ($diff<24)
			return $diff . " hour" . self::plural($diff) . " ago";
		$diff = round($diff/24);
		if ($diff<7)
			return $diff . " day" . self::plural($diff) . " ago";
		$diff = round($diff/7);
		if ($diff<4)
			return $diff . " week" . self::plural($diff) . " ago";
		return "on " . date("F j, Y", strtotime($date));
	} else {
		if ($diff>-60)
			return "in " . -$diff . " second" . self::plural($diff);
		$diff = round($diff/60);
		if ($diff>-60)
			return "in " . -$diff . " minute" . self::plural($diff);
		$diff = round($diff/60);
		if ($diff>-24)
			return "in " . -$diff . " hour" . self::plural($diff);
		$diff = round($diff/24);
		if ($diff>-7)
			return "in " . -$diff . " day" . self::plural($diff);
		$diff = round($diff/7);
		if ($diff>-4)
			return "in " . -$diff . " week" . self::plural($diff);
		return "on " . date("F j, Y", strtotime($date));
	}
}
public static function plural($num) {
	$num = abs((int) $num);
	 if ($num != 1)
	 	return "s";
}
}