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run code in 300+ PHP versions simultaneously
<?php class SomethingMagicAndTerriblyUgly { public $foo = null; private $bar = null; } var_dump(array_key_exists('foo', (array) (new SomethingMagicAndTerriblyUgly))); var_dump(array_key_exists('bar', (array) (new SomethingMagicAndTerriblyUgly)));
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(true) bool(false)

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162.31 ms | 403 KiB | 178 Q