print_r( DateTime::difference( 'now', 'January 1, 2010' ) );
output (past): Array ( [invert] => [y] => 0 [m] => 9 [w] => 3 [d] => 5 [h] => 22 [i] => 33 [s] => 5 )
print_r( DateTime::difference( 'now', 'January 1, 2011' ) );
output (future): Array ( [invert] => 1 [y] => 0 [m] => 2 [w] => 0 [d] => 3 [h] => 5 [i] => 33 [s] => 11 )
If 'invert' is true, the time is in the future (ie: x from now). If it is false, the time is in the past (ie: x ago).
For more information, see PHP's DateInterval class, which this and friendly() attempt to emulate for < PHP 5.3 | public static difference ( mixed $start_date, mixed $end_date ) : array | ||
| $start_date | mixed | The start date, as a HDT object or any format accepted by DateTime::create(). |
| $end_date | mixed | The end date, as a HDT object or any format accepted by DateTime::create(). |
| Результат | array | Array of each interval and whether the interval is inverted or not. |
public static function difference($start_date, $end_date)
{
// if the dates aren't HDT objects, try to convert them to one. this lets you pass in just about any format
if (!$start_date instanceof DateTime) {
$start_date = DateTime::create($start_date);
}
if (!$end_date instanceof DateTime) {
$end_date = DateTime::create($end_date);
}
$result = array();
// calculate the difference, in seconds
$difference = $end_date->int - $start_date->int;
if ($difference < 0) {
// if it's negative, time AGO
$result['invert'] = false;
} else {
// if it's positive, time UNTIL
$result['invert'] = true;
}
$difference = abs($difference);
// we'll progressively subtract from the seconds left, so initialize it
$seconds_left = $difference;
$result['y'] = floor($seconds_left / self::YEAR);
$seconds_left = $seconds_left - $result['y'] * self::YEAR;
$result['m'] = floor($seconds_left / self::MONTH);
$seconds_left = $seconds_left - $result['m'] * self::MONTH;
$result['w'] = floor($seconds_left / self::WEEK);
$seconds_left = $seconds_left - $result['w'] * self::WEEK;
$result['d'] = floor($seconds_left / self::DAY);
$seconds_left = $seconds_left - $result['d'] * self::DAY;
$result['h'] = floor($seconds_left / self::HOUR);
$seconds_left = $seconds_left - $result['h'] * self::HOUR;
$result['i'] = floor($seconds_left / self::MINUTE);
$seconds_left = $seconds_left - $result['i'] * self::MINUTE;
$result['s'] = $seconds_left;
return $result;
}