DateInterval::createFromDateString()
(PHP 5 >= 5.3.0, PHP 7)
Sets up a DateInterval from the relative parts of the string
说明
public static DateInterval::createFromDateString(string $time): DateInterval
Uses the normal date parsers and sets up a DateInterval from the relative parts of the parsed string.
参数
- $time
A date with relative parts. Specifically,therelative formatssupported by the parser used forstrtotime()andDateTimewill be used to construct the DateInterval.
范例
Parsing valid date intervals
<?php // Each set of intervals is equal. $i = new DateInterval('P1D'); $i = DateInterval::createFromDateString('1 day'); $i = new DateInterval('P2W'); $i = DateInterval::createFromDateString('2 weeks'); $i = new DateInterval('P3M'); $i = DateInterval::createFromDateString('3 months'); $i = new DateInterval('P4Y'); $i = DateInterval::createFromDateString('4 years'); $i = new DateInterval('P1Y1D'); $i = DateInterval::createFromDateString('1 year + 1 day'); $i = new DateInterval('P1DT12H'); $i = DateInterval::createFromDateString('1 day + 12 hours'); $i = new DateInterval('PT3600S'); $i = DateInterval::createFromDateString('3600 seconds'); ?>
返回值
Returns a newDateIntervalinstance.
DateInterval::createFromDateString ( string $time ) When the manual says "Uses the normal date parsers" it means that this function cannot take $time = ISO8601 strings like "P7D". If you want to use those, you must use the constructor.