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run code in 300+ PHP versions simultaneously
<?php class Foo { public static function test() { echo 'Ok!<br>'; } } define('CONFIG', [ Foo::test(), 'ok!' ]); var_dump(CONFIG[0]);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Ok!<br>NULL
Output for 5.6.8 - 5.6.28
Ok!<br> Warning: Constants may only evaluate to scalar values in /in/DFSJ2 on line 14 Notice: Use of undefined constant CONFIG - assumed 'CONFIG' in /in/DFSJ2 on line 16 string(1) "C"
Output for 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '[' in /in/DFSJ2 on line 16
Process exited with code 255.
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