3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php foreach(array( '.aaf', '..dafeafw', '..', '.' ) as $test) { var_dump(substr($test, 0, 1)); }
Output for 4.3.0 - 7.2.0
string(1) "." string(1) "." string(1) "." string(1) "."