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run code in 150+ php & hhvm versions
Bugs & Features
<?php $tz_str = 'GMT+1'; if ( preg_match( '|^(?:GMT|UTC)([+\- ]\d+(?:\.\d+)?)$|', $tz_str, $matches ) ) { $tz_str = 'Etc/GMT' . $matches[1]; } try { $timezone = new DateTimeZone( $tz_str ); echo 'valid'; } catch ( Exception $excpt ) { echo 'not valid'; }
Output for 5.2.14 - 5.2.17, 5.3.3 - 5.3.5, 5.5.24 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier 'T' in /in/IYGfR on line 3 valid
Output for hhvm-3.12.0
Warning: Unknown modifier 'T': [|^(?:GMT|UTC)([+\- ]\d+(?:\.\d+)?)$|] in /in/IYGfR on line 3 not valid
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.0 - 5.2.13, 5.3.0 - 5.3.2, 5.3.6 - 5.4.45
Warning: preg_match(): Unknown modifier 'T' in /in/IYGfR on line 3 not valid
Output for 5.0.0 - 5.1.6
Warning: preg_match(): Unknown modifier 'T' in /in/IYGfR on line 3 Fatal error: Class 'DateTimeZone' not found in /in/IYGfR on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '{' in /in/IYGfR on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '{' in /in/IYGfR on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/IYGfR on line 7
Process exited with code 255.