3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = "Testing"; echo --$test; // Echos "Testing" echo -$test; // Echos 0
Output for 7.1.0 - 7.2.0
Testing Warning: A non-numeric value encountered in /in/MRuOM on line 5 0
Output for 5.3.20 - 7.0.20
Testing0