3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump('\u041d\u0435\u043b\u044c\u0437\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0441\u0435\u0431\u0435 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(171) "\u041d\u0435\u043b\u044c\u0437\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0441\u0435\u0431\u0435 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435"

preferences:
304.1 ms | 406 KiB | 457 Q