3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "file uploaded"; header( "refresh:5;url=index.html" );
Output for 5.2.3 - 5.6.28, 7.0.0 - 7.1.0
file uploaded Warning: Cannot modify header information - headers already sent by (output started at /in/9nlmS:3) in /in/9nlmS on line 4
Output for hhvm-3.10.0 - 3.12.0
file uploaded Warning: Cannot modify header information - headers already sent in /in/9nlmS on line 4
Output for 4.3.0 - 5.2.2
file uploaded