PHPize Online / SQLize Online  /  SQLtest Online

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<?php class Solution { /** * @param Integer[] $nums * @param Integer $target * @return Integer */ static function search($nums, $target) { $keys = array_keys($nums, $target); if (count($keys) > 1) return -1; else return current($keys); } } var_dump(Solution::search([-1, 0, 3], 2));
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