add function getPeriodOfTime() and isAjax()

inc/inc.Utils.php

@@ -46,6 +46,29 @@ function getLongReadableDate($timestamp) { /* {{{ */
 		return date("Y-m-d H:i:s", $timestamp);
 } /* }}} */
 
+function getPeriodOfTime($timestamp) { /* {{{ */
+	if(!is_numeric($timestamp))
+		$timestamp = strtotime($timestamp);
+
+	$time = time() - $timestamp; // to get the time since that moment
+	$time = ($time<1)? 1 : $time;
+	$tokens = array (
+		31536000 => getMLText('abbr_year'),
+		2592000 => getMLText('abbr_month'),
+		604800 => getMLText('abbr_week'),
+		86400 => getMLText('abbr_day'),
+		3600 => getMLText('abbr_hour'),
+		60 => getMLText('abbr_minute'),
+		1 => getMLText('abbr_second')
+	);
+
+	foreach ($tokens as $unit => $text) {
+		if ($time < $unit) continue;
+		$numberOfUnits = floor($time / $unit);
+		return $numberOfUnits.' '.$text.(($numberOfUnits>1)?'s':'');
+	}
+} /* }}} */
+
 /*
  * Converts a date/time string into a timestamp
  *
@@ -624,6 +647,13 @@ function getToken($length){ /* {{{ */
 	return $token;
 } /* }}} */
 
+function isAjax() { /* {{{ */
+	if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest')
+		return true;
+	else	
+		return false;
+} /* }}} */
+
 /**
  * Hash a password 
  *