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<?php function test(array $input1, array $input2): bool { $result = array_intersect($input1,$input2); $result = count($result) > 0; return $result; } $expected = false; var_dump(test([1,2,3],[4,7]) === $expected); // works? $expected = true; var_dump(test([1,2,3],[1,2]) === $expected); // works?
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.26, 8.4.1 - 8.4.13
bool(true) bool(true)

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104.54 ms | 407 KiB | 5 Q