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run code in 300+ PHP versions simultaneously
<?php trait Foo {public $var = [];} trait Bar {public $var = [];} class Baz {use Foo, Bar; private $var = [];}
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Baz and Foo define the same property ($var) in the composition of Baz. However, the definition differs and is considered incompatible. Class was composed in /in/umfVE on line 5
Process exited with code 255.
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138.64 ms | 404 KiB | 167 Q