3v4l.org

run code in 300+ PHP versions simultaneously
<?hh class Foo { function get(): ?int { static $called = false; if (!$called) { $called = true; return 42; } return null; } } function doStuff(Foo $foo) { var_dump($foo->get() ? $foo->get() : 'was null the first time'); } doStuff(new Foo());
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
<?hh class Foo { function get(): ?int { static $called = false; if (!$called) { $called = true; return 42; } return null; } } function doStuff(Foo $foo) { var_dump($foo->get() ? $foo->get() : 'was null the first time'); } doStuff(new Foo());
Output for 8.0.13
Parse error: syntax error, unexpected token "class" in /in/JqWiI on line 3
Process exited with code 255.
Output for 5.4.34, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/JqWiI on line 3
Process exited with code 255.

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