3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); namespace strict { class Foo {} } namespace { use strict; }
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Fatal error: Namespace declaration statement has to be the very first statement in the script in /in/Oj5kn on line 5
Process exited with code 255.
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283.15 ms | 1395 KiB | 54 Q