3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php ob_start(); echo 'foo'; fwrite(STDOUT, 'bar');
Output for 5.2.3 - 7.2.0
barfoo
Output for 4.3.0 - 5.2.2
foo Notice: Use of undefined constant STDOUT - assumed 'STDOUT' in /in/IIZRa on line 6 Warning: fwrite(): supplied argument is not a valid stream resource in /in/IIZRa on line 6