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run code in 300+ PHP versions simultaneously
<?php var_dump(hello); function atom(...$atoms) { array_walk( $atoms, function ($atom) { if (defined($atom)) { if ($atom !== constant($atom)) raise("The atom is already defined with a different value: ".$atom); } else { define($atom, $atom); } } ); } atom(@atom); atom(@raise); atom(@dispatch); atom(@acceptsmessage); atom(@isatom); var_dump(@atom);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "hello" in /in/39e5T:2 Stack trace: #0 {main} thrown in /in/39e5T on line 2
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant hello - assumed 'hello' (this will throw an Error in a future version of PHP) in /in/39e5T on line 2 string(5) "hello" string(4) "atom"
Output for 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant hello - assumed 'hello' in /in/39e5T on line 2 string(5) "hello" string(4) "atom"
Output for 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/39e5T on line 3
Process exited with code 255.
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