3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X{ public $r = $_SERVER['HTTP_HOST']; } $x = new X();
Output for 7.0.0 - 7.0.19, 7.1.0 - 7.1.5
Fatal error: Constant expression contains invalid operations in /in/psvFQ on line 3
Process exited with code 255.

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