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run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match( '\[.*?\]|\{.*?\}', '{table}is{chart}', $matches); print_r($matches); // 1234
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/9XcOX on line 2
Output for hhvm-3.12.0
Warning: Delimiter must not be alphanumeric or backslash in /in/9XcOX on line 2
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.11 - 5.0.5, 5.1.1 - 5.1.6
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/9XcOX on line 2 Array ( )
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/9XcOX on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/9XcOX on line 2 Array ( )