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 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(true) vava
preferences:
43.98 ms | 700 KiB | 4 Q