开发非税代收系统部分功能代码

将自己开发的功能代码保存在此，一是方便以后重用，二更是为了防防止丢失或遗忘。

socket通信函数：

   /**
     * 发送socket请求/接收socket返回数据
     *
     * @param string $server 服务器主机IP地址
     * @param int $port 服务器主机端口
     * @param string $request 请求字串
     * @param int timeout 设定超时参数，默认为 60 秒
     * @param int $buffer 设定每次读取数据的长度，默认为 1024 Byte，但遇到\n符号时也会结束
     * @return string 返回数据
     */
    function socket_raw_connect ($server, $port, $request, $timeout = 60, $buffer = 1024)
    {

        if (!is_numeric($port)) {
            // 如果传入的端口号不是数字，则返回 false
            return false;
        }
        $socket = @fsockopen($server, $port, $errno, $errstr, $timeout);

        $backData = array();

        if (!$socket || $socket == '') {
            // 如果连接服务器失败，则返回 false
            $backData['success'] = false;
            $backData['msg'] = '连接服务器失败';
            return $backData;
        } else {
            // 设置 socket 通信为阻塞模式，以防止数据未读完就退出
            stream_set_blocking($socket, false);

            // 设置 socket 的通信超时值，默认为 60 秒
            stream_set_timeout($fp, $timeout);
        }

        // 向服务器发送请求数据
        fputs($socket, $request."\n");

        // 发送请求超时处理
        $status = stream_get_meta_data($socket);
        if ($status['timed_out']) {
            $backData['success'] = false;
            $backData['msg'] = '发送请求失败';
            return $backData;
        }

        // 读取服务器响应请求返回的数据
        $ret = '';
        while (!feof($socket)) {
            $ret .= fgets($socket, $buffer);
        }

        // 读取数据超时处理
        $status = stream_get_meta_data($socket);
        if ($status['timed_out']) {
            fclose($socket);
            $backData['success'] = false;
            $backData['msg'] = '返回数据失败';
            return $backData;
        }

        // 关闭 socket 连接
        fclose($socket);

        $backData['success'] = true;
        $backData['backdata'] = $ret;
        return $backData;
    }

 

生成16 位循环冗余校验码代码：

    /**
     * 返回字符串的 16 位循环冗余校验码
     *
     * @param string $string
     * @param int $length
     * @return string
     * ==============================================
     * 使用方法：
     * $checksum = $this->crc16('1070100000552');
    * dump($checksum);
    * 返回 17320
    * $checksum = $this->crc16('10701000005523710000');
    * dump($checksum);
    * 返回 02743
    * =============================================
     */
    function crc16($string, $length = 0)
    {
        $auchCRCHi=array(
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
            0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
            0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
            0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
            0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
            0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
        );
        $auchCRCLo=array(
            0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,
            0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,
            0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
            0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A,
            0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4,
            0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
            0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3,
            0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,
            0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
            0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29,
            0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,
            0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
            0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60,
            0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,
            0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
            0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,
            0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,
            0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
            0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,
            0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,
            0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
            0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,
            0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B,
            0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
            0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,
            0x43, 0x83, 0x41, 0x81, 0x80, 0x40
        );
        $length =($length <= 0)?strlen($string):$length;
        $uchCRCHi = 0xFF;
        $uchCRCLo = 0xFF;
        $uIndex = 0;
        for ($i=0; $i<$length; $i++) {
            $uIndex =$uchCRCHi ^ ord(substr($string,$i,1));
            $uchCRCHi =$uchCRCLo ^ $auchCRCHi[$uIndex];
            $uchCRCLo =$auchCRCLo[$uIndex];
        }
        $checksum = $uchCRCHi<<8|$uchCRCLo;
        $len = 5 - strlen($checksum);
        $zero = '';
        for ($i=0; $i<$len; $i++) {
            $zero = $zero . '0';
        }
        $checksum = $zero . $checksum;
        return $checksum;
    }

 

发送 xls HTML 文件头：

    /**
     * 发送 xls HTML 文件头
     *
     * @param string $filename
     */
    function excelHeaderSend($filename)
    {
        header("Content-type: application/vnd.ms-excel");
        header("Content-Disposition: filename={$filename}");
    }