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run code in 200+ php & hhvm versions
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<?php $tz = 'europe/paris'; $truc = explode('/',$tz); $tz = ucfirst($truc[0]).'/'.ucfirst($truc[1]); echo "\n"; var_dump(in_array($tz, DateTimeZone::listIdentifiers()));
based on OK7NM
Output for 5.2.0 - 7.2.6
bool(true)
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTimeZone' not found in /in/7ugrR on line 6
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Undefined class name 'datetimezone' in /in/7ugrR on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Undefined class name 'datetimezone' in /in/7ugrR on line 6