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<?php $s = "Huawei MatePad 11 (2021)"; $regex = "/\(([^()]+)\)|\h+/"; $result = preg_replace_callback($regex, function($m) { return array_key_exists(1, $m) ? $m[1] : '-'; }, $s); echo $result;

This is an error 500

Value for `_results` contains invalid data `array`


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