3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = base64_decode('R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs='); var_dump(@mime_content_type('data://text/plain;base64,' . base64_encode($string)));
Output for 5.3.6 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 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(9) "image/gif"
Output for 5.3.0 - 5.3.5
bool(false)
Output for 4.3.2 - 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

Process exited with code 255.
Output for 4.3.0 - 4.3.1

preferences:
199.92 ms | 401 KiB | 314 Q