3v4l.org

run code in 300+ PHP versions simultaneously
<?php $contents = json_decode('', true); if (json_last_error() != JSON_ERROR_NONE) { echo 'oh no, error: ', json_last_error_msg(), PHP_EOL; } var_dump($contents);
Output for 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 - 8.3.7
oh no, error: Syntax error NULL
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
NULL
preferences:
259.03 ms | 402 KiB | 331 Q