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run code in 300+ PHP versions simultaneously
<?php namespace Crell\Serde { if (!class_exists(Serde::class)) { abstract class Serde {} } } namespace { use Crell\Serde\Serde; class Expression extends Serde {} }
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3

preferences:
63.48 ms | 968 KiB | 4 Q