3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Base { static $x = A::y; } class Derived extends Base { static $y = 42; } echo Base::x
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected end of file, expecting ',' or ';' in /in/nWc9t on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected $end, expecting ',' or ';' in /in/nWc9t on line 10
Process exited with code 255.
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190.45 ms | 940 KiB | 65 Q