3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace A { class X {} } namespace B { use A\X as Y; class Z extends Y {} } namespace { new \B\Z(); echo "true"; }
Output for 5.3.0 - 7.1.0
true
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/s2sOR on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/s2sOR on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/s2sOR on line 2
Process exited with code 255.