Quick Reference
The PHP date_interval_format() function is an alias of DateInterval::format().
<?php
$date1 = date_create('2013-01-11');
$date2 = date_create('2023-01-11');
$diff = date_diff($date1, $date2);
echo $diff->format('Total number of days: %a');
?>Output
Total number of days: 3652Syntax
DateInterval::format(format)Parameters
| Parameter | Description |
|---|---|
| format | Specifies the format for the date; Each format character must be prefixed by a % sign (required): % - Literal % Y - Year, at least 2 digits with leading zero (e.g 03) y - Year (e.g 3) M - Month, with leading zero (e.g 06) m - Month (e.g 6) D - Day, with leading zero (e.g 09) d - Day (e.g 9) a - Total number of days as a result of date_diff() H - Hours, with leading zero (e.g 08, 23) h - Hours (e.g 8, 23) I - Minutes, with leading zero (e.g 08, 23) i - Minutes (e.g 8, 23) S - Seconds, with leading zero (e.g 08, 23) s - Seconds (e.g 8, 23) F - Microseconds, at least 6 digits (e.g 004403, 235689) f - Microseconds (e.g 4403, 235689) R - Sign "-" when negative, "+" when positive r - Sign "-" when negative, empty when positive |
PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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