3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {}; class B{}; $a = new A(); $b = new B(); $clo = function () { return 0; }; $c = $a <=> $clo; echo "$c\n";
Output for 7.0.0 - 7.0.33, 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
1
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected '>' in /in/IJrhJ on line 9
Process exited with code 255.
preferences:
270.15 ms | 402 KiB | 368 Q