3v4l.org

run code in 300+ PHP versions simultaneously
<?php setlocale(LC_ALL, "en_US.utf8"); var_dump(escapeshellarg("\xc3\xbf"));
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12, 8.1rc1 - rc3
string(4) "'ΓΏ'"

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41.31 ms | 460 KiB | 5 Q