3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x { const FOO = "bar"; } $class = 'x'; $const = 'FOO'; var_dump($class::{'FOO'});
Output for 5.4.0 - 5.4.21
Parse error: syntax error, unexpected ')', expecting '(' in /in/IZ5YI on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '{', expecting T_STRING or T_VARIABLE or '$' in /in/IZ5YI on line 6
Process exited with code 255.
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182.82 ms | 1395 KiB | 57 Q