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run code in 300+ PHP versions simultaneously
<?php function foo(string $bar = null) { var_dump($bar); } foo(null);
Output for 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Deprecated: foo(): Implicitly marking parameter $bar as nullable is deprecated, the explicit nullable type must be used instead in /in/b2Jg0 on line 3 NULL
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30
NULL
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