3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace foo { class bar { } } namespace bar { namespace foo { class bar { } } } $bar = new foo\bar; namespace bar { $foo = new foo\bar; } var_dump($bar, $foo);
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Fatal error: Namespace declarations cannot be nested in /in/hdbV5 on line 8
Process exited with code 255.

preferences:
186.38 ms | 1395 KiB | 68 Q