/** pack 的format * a NUL-padded string * A SPACE-padded string * h Hex string, low nibble first * H Hex string, high nibble first * c signed char * C unsigned char * s signed short (always 16 bit, machine byte order) * S unsigned short (always 16 bit, machine byte order) * n unsigned short (always 16 bit, big endian byte order) * v unsigned short (always 16 bit, little endian byte order) * i signed integer (machine dependent size and byte order) * I unsigned integer (machine dependent size and byte order) * l signed long (always 32 bit, machine byte order) * L unsigned long (always 32 bit, machine byte order) * N unsigned long (always 32 bit, big endian byte order) * V unsigned long (always 32 bit, little endian byte order) * q signed long long (always 64 bit, machine byte order) * Q unsigned long long (always 64 bit, machine byte order) * J unsigned long long (always 64 bit, big endian byte order) * P unsigned long long (always 64 bit, little endian byte order) * f float (machine dependent size and representation) * d double (machine dependent size and representation) * x NUL byte * X Back up one byte * Z NUL-padded string (new in PHP 5.5) * @ NUL-fill to absolute position */
2. [代码]使用例子－1 跳至
$out = new OutputStream();
$out->writeNumber(100);
$out->writeShort(20);
$out->writeStr("i love wanes",25);
$out->writeChar("48");
$msg = $out->getOutStream();
echo $msg,"\n","长度:",$out->getLen(),"\n";
//＊每个数据包的长度一般都是固定的
$in = new InputStream($msg);
echo $in->readNumber(0)," \n ";
echo $in->readShort(0+4)," \n ";
echo $in->readStr(4+2,25)," \n ";
echo $in->readChar(4+2+25)," \n ";
3. [代码]使用例子－2 swoole_client中发送／解析2进制
/**
* Created by PhpStorm.
* User: wanwan
* Date: 16/4/6
* Time: 上午9:02
*/
$serv = new swoole_server("127.0.0.1", 7890);
$serv->set(array(
'worker_num' => 1, //工作进程数量
'daemonize' => false, //是否作为守护进程
));
$serv->on('connect', function ($serv, $fd) {
echo "Client: $fd Connect.\n";
});
$serv->on('receive', function ($serv, $fd, $from_id, $data) {
file_put_contents(__DIR__ . "/test.txt", $data . "\n", FILE_APPEND);
$in = new InputStream($data);
echo "长度 : ", $in->readNumber(0), " \n";
echo "指令 : ", $in->readNumber(4), " \n";
echo "流水号 : ", $in->readNumber(8), " \n";
echo "企业号 : ", $in->readStr(12, 6), " \n";
//echo "密钥串 : ",$in->readStr(18,16)," \n";
echo "版本号 : ", $in->readChar(18 + 16), " \n";
echo "时间戳 : ", $in->readNumber(18 + 16 + 1), " \n";
$out = new OutputStream();
$out->writeNumber(100);
$out->writeShort(20);
$out->writeStr("i love wanes",25);
$out->writeChar("48");
$msg = $out->getOutStream();
echo $msg,"长度 :",$out->getLen(),"\n";
$serv->send($fd, $msg);
$serv->close($fd);
});
$serv->on('close', function ($serv, $fd) {
echo "Client: $fd Close.\n";
});
$serv->start();
4. [文件] InputStram.php ~ 2KB
stream = $stream_str;
}
/**
* 私有方法:截取流字符串
* @param $star 开始位置
* @param $len 截取长度
* @return string 返回截取好对应字段的流字符串
*/
private function read($star, $len)
{
return substr($this->stream, $star, $len);
}
/**
* @inheritdoc 读取一个32位的数字,注:php中int和java的long/short是对等的
* @param $star 开始位置
* @param int $len 长度,默认是int
* @param bool $sign 是否是signed类型,默认不是
* @return mixed 返回一个number
*/
public function readNumber($star, $len = 4, $sign = false)
{
$temp = unpack($sign ? "l" : "N", $this->read($star, $len));
return $temp[1];
}
/**
* @inheritdoc 读取定长字符串
* @param $star 开始位置
* @param int $len 长度
* @param bool $sign 是否是signed类型,默认不是
* @return mixed 返回一个字符串
*/
public function readStr($star, $len, $sign = false)
{
$format = $sign ? "a" : "A";
$temp = unpack($format . $len, $this->read($star, $len));
return $temp[1];
}
/**
* @inheritdoc 读取短数字
* @param $star 开始位置
* @param bool $sign 是否是signed类型,默认不是
* @return mixed 返回一个short
*/
public function readShort($star, $sign = false)
{
$temp = unpack($sign ? "s" : "n", $this->read($star, 2));
return $temp[1];
}
/**
* @inheritdoc 读一个字洁/字符 = java.readByte
* @param $star 开始位置
* @param bool $sign 是否是signed类型,默认不是
* @return mixed 返回一个char
*/
public function readChar($star, $sign = false)
{
$temp = unpack($sign ? "c" : "C", $this->read($star, 1));
return $temp[1];
}
/**
* @inheritdoc 读一个字节型字符串 = java.readBytes
* @param $star 开始位置
* @param int $len 长度,默认是1
* @param bool $sign 是否是signed类型,默认不是
* @return mixed 返回一个number
*/
public function readChars($star,$len = 1,$sign = false)
{
$temp = unpack($sign ? "c$len" : "C$len", $this->read($star, $len));
return $temp[1];
}
}
5. [文件] OutputStream.php ~ 2KB
stream .= pack($format, $number);
$this->len+=$len;
}else{
$this->stream .= pack($sign?"l":"N", $number);
$this->len+=4;
}
}
/**
* @inheritdoc 写入一个byte
* @param $char
* @param bool $sign 是否signed类型数据
* @inheritdoc 这默认是8位/1字节的char = java.writeByte
*/
public function writeChar($char,$sign = false)
{
$this->stream .= pack($sign?"c":"C", $char);
$this->len+=1;
}
/**
* @inheritdoc 字符串以byte的形式写入流 = java.writeBytes
* @param $str
* @param int $len 字符串长度
* @param bool $sign 是否signed类型数据
*/
public function writeChars($str,$len = 1,$sign = false)
{
$this->stream .= pack($sign?"c$len":"C$len", $str);
$this->len+=1;
}
/**
* @inheritdoc 写定长字符串
* @param $str
* @param $len 字符串长度
* @param bool $sign 是否signed类型数据
*/
public function writeStr($str, $len,$sign = false)
{ $format =$sign? "a" : "A" ;
$this->stream .= pack($format.$len, $str);
$this->len+=$len;
}
/**
* @inheritdoc 这默认是16位/2字节的short
* @param $short short数据
* @param bool $sign 是否是signed类型,默认不是
*/
public function writeShort($short,$sign = false)
{
$this->stream .= pack($sign?"s":"n", $short);
$this->len+=2;
}
/**
* @return string 返回2进制流
*/
public function getOutStream()
{
return $this->stream;
}
/**
* @return int获取流字节长度
*/
public function getLen(){
return $this->len;
}
}
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