How do I convert datetime to ISO 8601 in PHP
PhpDatetimeDate FormatDatetime FormatTime FormatPhp Problem Overview
How do I convert my time from 2010-12-30 23:21:46 to ISO 8601 date format? (-_-;)
Php Solutions
Solution 1 - Php
Object Oriented
This is the recommended way.
$datetime = new DateTime('2010-12-30 23:21:46');
echo $datetime->format(DateTime::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));
Solution 2 - Php
After PHP 5 you can use this: echo date("c"); form ISO 8601 formatted datetime.
Note for comments:
Regarding to this, both of these expressions are valid for timezone, for basic format: ±[hh]:[mm], ±[hh][mm], or ±[hh].
But note that, +0X:00 is correct, and +0X00 is incorrect for extended usage. So it's better to use date("c"). A similar discussion here.
Solution 3 - Php
###How to convert from ISO 8601 to unixtimestamp :
strtotime('2012-01-18T11:45:00+01:00');
// Output : 1326883500
###How to convert from unixtimestamp to ISO 8601 (timezone server) :
date_format(date_timestamp_set(new DateTime(), 1326883500), 'c');
// Output : 2012-01-18T11:45:00+01:00
###How to convert from unixtimestamp to ISO 8601 (GMT) :
date_format(date_create('@'. 1326883500), 'c') . "\n";
// Output : 2012-01-18T10:45:00+00:00
###How to convert from unixtimestamp to ISO 8601 (custom timezone) :
date_format(date_timestamp_set(new DateTime(), 1326883500)->setTimezone(new DateTimeZone('America/New_York')), 'c');
// Output : 2012-01-18T05:45:00-05:00
Solution 4 - Php
If you try set a value in datetime-local
date("Y-m-d\TH:i",strtotime('2010-12-30 23:21:46'));
//output : 2010-12-30T23:21
Solution 5 - Php
According to PHP offcial documentation you can simply format it to:
echo $objDateTime->format('c'); // ISO8601 formated datetime
echo $objDateTime->format(DateTime::ISO8601); // Another way to get an ISO8601 formatted string
Solution 6 - Php
ISO 8601 is basically represented in PHP as "Y-m-d\TH:i:sP"
You can get this value from a constant:
DateTime::ATOM - for PHP versions below 7.2 (was removed)
DateTimeInterface::ATOM - for PHP versions since 7.2
Solution 7 - Php
You can try this way:
$datetime = new DateTime('2010-12-30 23:21:46');
echo $datetime->format(DATE_ATOM);
Solution 8 - Php
$datetime->format('Y-m-d\TH:i:s.u\Z') should give the proper format, with the "T" separator, "Z" timezone (make sure to convert to UTC first) and microseconds (omit .u if you don't intend to support fractional seconds).
See https://stackoverflow.com/a/9532375/65387 for discussion why should use T