3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = []; var_dump( filter_var( $a, FILTER_SANITIZE_STRING ) );
based on H2EVR
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
bool(false)