3v4l.org

run code in 300+ PHP versions simultaneously
<?php $username = 'fem'; $password = '3bpvblW7'; $challenge = ''; $challenge_res = '0c07042fb4d065fd3baae50b511be2fb'; $challenge_cmp = md5($username); var_dump($challenge_cmp);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.6
string(32) "411f822017e8c2a440ad181acfe50efb"
preferences:
173.87 ms | 406 KiB | 311 Q