3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(putenv("PHP_PUTENV_NUL_TEST=va\0ue")); echo getenv('PHP_PUTENV_NUL_TEST'); echo getenv("PHP_PUTENV_NUL_TEST\0asd");
Output for 8.2.31 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
bool(true) vava
preferences:
52.45 ms | 750 KiB | 4 Q