<?php $legit_id = pack("c3", -34, -34, -34); var_dump($legit_id); var_dump(check_input_data($legit_id, 'int')); function check_input_data($data, $type) { if (preg_match('/^[0-9]{1,10}$/D', $data) && $data < 2147483647) return true; }
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