3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(json_encode('http://www.example.com/'));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
string(28) ""http:\/\/www.example.com\/""

preferences:
37.5 ms | 411 KiB | 5 Q