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run code in 150+ php & hhvm versions
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<?php preg_match("/^\$((([\w\.-]+):)?((\w+):))?(\w+)$/",$matches); print_r($matches); echo "\n"; preg_match("/(\w*)/",$matches); print_r($matches);
Output for 5.0.4 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.1.0
Notice: Undefined variable: matches in /in/Rust3 on line 2 Notice: Undefined variable: matches in /in/Rust3 on line 3 Notice: Undefined variable: matches in /in/Rust3 on line 5 Notice: Undefined variable: matches in /in/Rust3 on line 6
Output for hhvm-3.12.0
Notice: Undefined variable: matches in /in/Rust3 on line -1 Notice: Undefined variable: matches in /in/Rust3 on line -1 Notice: Undefined variable: matches in /in/Rust3 on line -1 Notice: Undefined variable: matches in /in/Rust3 on line -1
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: matches in /in/Rust3 on line 2 Notice: Undefined variable: matches in /in/Rust3 on line 3 Notice: Undefined variable: matches in /in/Rust3 on line 5 Notice: Undefined variable: matches in /in/Rust3 on line 6