3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hashn = hash_hmac('sha256', '', '7d87ae991cd4854952ebc9a6bea989ae1ec8974983c22cb9d27ee0e60113b1e1'); $hashn = substr($hashn,0,64); var_dump($hashn);
Output for 5.1.2 - 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 - 7.1.25, 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 - 8.3.6
string(64) "22b53f3d69729bfad96a515595884949fefa744db7c8e1c3ddbca0149b1c1dcd"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Fatal error: Call to undefined function hash_hmac() in /in/424Qs on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: hash_hmac() in /in/424Qs on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: hash_hmac() in /in/424Qs on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: hash_hmac() in /in/424Qs on line 2

preferences:
218.63 ms | 401 KiB | 329 Q