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run code in 300+ PHP versions simultaneously
<?php class Foo extends SplFixedArray { public function offsetExists($index) { return parent::offsetExists($index); } } $foo = new Foo(2); $foo[0] = 'bar1'; $foo[1] = 'bar2'; var_dump($foo[0] ?? null); var_dump($foo[1] ?? null); var_dump($foo[2] ?? null);
based on u6VOI
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.23, 7.4.0 - 7.4.11, 8.0.0alpha1 - rc2
string(4) "bar1" string(4) "bar2" NULL