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<?php $interval = new \DateInterval('PT30S'); var_dump($interval->format('%s seconds')); // expected: 1800 seconds
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(10) "30 seconds"
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sZPZU on line 3 Fatal error: Class 'DateInterval' not found in /in/sZPZU on line 3
Process exited with code 255.
Output for 5.1.0
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sZPZU on line 3 Fatal error: fatal flex scanner internal error--end of buffer missed in /in/sZPZU on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sZPZU on line 3 Fatal error: Cannot instantiate non-existent class: dateinterval in /in/sZPZU on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sZPZU on line 3 Fatal error: Cannot instantiate non-existent class: dateinterval in /in/sZPZU on line 3

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