[PHP] pobierz, plaintext 
$ostatniagodzina = time() - 3600;
if(strtotime($jakasdata)  < $ostatniagodzina) echo " blabla" ;
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$datetime1 = new DateTime('2015-06-25');
$datetime2 = new DateTime('2015-06-20');
$interval = $datetime1->diff($datetime2);
[PHP] pobierz, plaintext