3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { const A = 10; const B = 20 + self::A + array(); }
Output for 5.6.7 - 5.6.28
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '+', expecting ',' or ';' in /in/SKCBm on line 5
Process exited with code 255.

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