3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = new DateTimeImmutable (); $resultmonth1 = $date->format("n"); $date = $date->modify("next month"); $resultmonth2 = $date->format("n"); var_dump($resultmonth1,$resultmonth2); ?>
Output for 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 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
string(1) "8" string(1) "9"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
Fatal error: Class 'DateTimeImmutable' not found in /in/Rqccc on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetimeimmutable in /in/Rqccc on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetimeimmutable in /in/Rqccc on line 3
preferences:
66.96 ms | 408 KiB | 5 Q