3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $backtrace = version_compare(PHP_VERSION, '5.3.6', '>=') ? debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS) : debug_backtrace();
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0