CRC16代码从Java到PHP

Question

如何将Java CRC16代码转换为PHP代码？ PHP不接受byte和＆gt;＆gt;＆gt;

public static int CRC16(final byte[] buffer) {
        int crc = 0xffff;

        for (int i = 0; i < buffer.length; i++) {
            crc = ((crc >>> 8) | (crc << 8)) & 0xffff;
            crc ^= (buffer[i] & 0xff);
            crc ^= ((crc & 0xff) >> 4);
            crc ^= (crc << 12) & 0xffff;
            crc ^= ((crc & 0xff) << 5) & 0xffff;
        }
        crc &= 0xffff;

        return crc;
    }

Answer 1

将crc >>> 8替换为(crc >> 8) & 0xff。