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run code in 300+ PHP versions simultaneously
<?php interface i{} class a implements i{} var_dump(a::class instanceof i); // false var_dump(in_array(i::class, class_implements(a::class), true)); // true
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
bool(false) bool(true)

preferences:
122 ms | 407 KiB | 5 Q