3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Base { const x = Derived::$y; } class Derived extends Base { static $y = 42; } echo Base::x;
Output for 5.4.0 - 5.4.27
Parse error: syntax error, unexpected '$y' (T_VARIABLE), expecting identifier (T_STRING) in /in/euuse on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE, expecting T_STRING in /in/euuse on line 3
Process exited with code 255.
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189.16 ms | 1395 KiB | 64 Q