3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { return new class{}; } function bar() { return new class{}; } $a = foo(); $b = foo(); $x = bar(); var_dump($a instanceof $b); var_dump($b instanceof $a); var_dump($a instanceof $x); var_dump($x instanceof $a);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 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
bool(true) bool(true) bool(false) bool(false)

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90.6 ms | 1239 KiB | 4 Q