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<?php class MyDateInterval extends DateInterval { /** * @return MyDateInterval */ public static function fromDateInterval(DateInterval $from) { return new MyDateInterval($from->format('P%yY%dDT%hH%iM%sS')); } public function add(DateInterval $interval) { foreach (str_split('ymdhis') as $prop) { $this->$prop += $interval->$prop; } } } $a = new DateTime('14:25'); $b = new DateTime('17:30'); $interval1 = $a->diff($b); echo "interval 1: ", $interval1->format("%H:%I"), "\n"; $c = new DateTime('08:00'); $d = new DateTime('13:00'); $interval2 = $c->diff($d); echo "interval 2: ", $interval2->format("%H:%I"), "\n"; $e = MyDateInterval::fromDateInterval($interval1); $e->add($interval2); echo "Total interval: ", $e->format("%H:%I"), "\n";
Output for 5.3.6 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
interval 1: 03:05 interval 2: 05:00 Total interval: 08:05
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 interval 1: 03:05 interval 2: 05:00 Total interval: 08:05
Output for 5.3.0 - 5.3.5
interval 1: 03:05 interval 2: 05:00 Total interval: 03:05
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Class 'DateInterval' not found in /in/BcOh2 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/BcOh2 on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/BcOh2 on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/BcOh2 on line 8
Process exited with code 255.
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