PHP实现讯飞语音转写demo
讯飞语音转写demo，模仿讯飞平台官网python代码
- 经历的坑
- 代码
- 运行结果如下图
前前后后改了好久，做个记录，以及经历的一些坑。上传切片功能没有，也就是说我这里的切片为1，里面很多bug，异常处理都没有，后面再修改。
经历的坑
1.预处理处的签名处理，因为和python有些函数不一样，所有琢磨了好久。我的php版本是5.5。
python中的写法如下：
ts = str(int(time.time()))
m2 = hashlib.md5()
m2.update((appid + ts).encode('utf-8'))
md5 = m2.hexdigest()
md5 = bytes(md5, encoding='utf-8')
signa = hmac.new(secret_key.encode('utf-8'), md5, hashlib.sha1).digest()
signa = base64.b64encode(signa)
signa = str(signa, 'utf-8')
在php中的写法:其中hash_hmac()，借鉴了一篇博客(https://blog.csdn.net/Ligongxiang123/article/details/76590196)，说了两者（php和python）怎么转换。
$ts=time();
$md5 = md5($appid.$ts);
$signa = hash_hmac('sha1',$md5,$secret_key,true);
$signa=base64_encode($signa);
其中在字节数组地方卡住了，查了一下，原因是php5.5中的 string 本来就是“字节串”。为了测试每一步的结果，调试的时候是获取的时间戳固定，两边逐步运行对比出来的。我觉得这可能是讯飞的一个小bug，如果我将传入的时间戳固定，签名也固定，是不是就可以直接过滤掉这一段了！
2.在upload时卡了好几个小时，因为老是报26600（转写业务通用错误）的错误，我当时读取文件用的代码是
$content = urlencode(base64_encode(file_get_contents($upload_file_path)));
但是怎么都不对，改编码也没改对！最后在一篇博客（https://blog.csdn.net/wb_json/article/details/95050959）上看到了解决办法，这个老哥实现了语音转写也提供了代码，但是需要在yii上运行。下面是我复制过来的。
$mime = (new \finfo(FILEINFO_MIME_TYPE))->file($result->file);
$curlFile = curl_file_create(
$file,
$mime,
pathinfo(
$file,
PATHINFO_BASENAME
)
);
我没有finfo这个类，最后百度百度，需要安装php_fileinfo扩展，然后用finfo_open().,最终解决问题。
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime = finfo_file($finfo, $upload_file_path);
finfo_close($finfo);
$curlFile = curl_file_create(
$upload_file_path,
$mime,
pathinfo(
$upload_file_path,
PATHINFO_BASENAME
)
);
剩下的就剩json数据格式的问题了，这个百度百度就有了。可以参考（https://www.cnblogs.com/totian/p/7498742.html），下面代码记得改完app_id,secret_key，file_path就可以用了。嗯，应该可以的，我试过。哈哈哈！
代码
<?php
header("Content-Type: text/html; charset=utf-8");
class Sliceidgenerator{
private $__ch;
public function __construct() {
$this->__ch = 'aaaaaaaaa`';
}
public function getNextSliceId(){
$ch = $this->__ch;
$j = strlen($ch) - 1;
while($j >= 0){
$cj = $ch[$j];
if ($cj != 'z'){
$ch = substr($ch,0,$j) . chr((ord($cj) + 1)) . substr($ch,$j + 1);
break;
}
else{
$ch = substr($ch,0,$j) . 'a' . substr($ch,$j + 1);
$j = $j - 1;
}
}
$this->__ch = $ch;
return $ch;
}
}
class Fx_Api{
private $lfasr_host = 'http://raasr.xfyun.cn/api';
# 请求的接口名
private $api_prepare = '/prepare';
private $api_upload = '/upload';
private $api_merge = '/merge';
private $api_get_progress = '/getProgress';
private $api_get_result = '/getResult';
# 文件分片大小10M
private $file_piece_sice = 10485760;
# 转写类型
private $lfasr_type = 0;
# 是否开启分词
private $has_participle = 'false';
private $has_seperate = 'true';
# 多候选词个数
private $max_alternatives = 0;
# 子用户标识
private $suid = '';
private $appid;
private $secret_key;
private $upload_file_path;
private $obj;
private $data;
private $sig;
public function __construct($file_path,$appid,$secret_key,$sig) {
$this->upload_file_path = $file_path;
$this->appid = $appid;
$this->secret_key = $secret_key;
$this->sig = $sig;
}
#主要运行函数
public function run() {
if($this->upload_file_path!=''){
#预处理
$pre_result = json_decode($this->prepare_request(),true);
$taskid = $pre_result['data'];
#上传文件
$this->upload_request($taskid,$this->upload_file_path);
$this->merge_request($taskid);
while (true) {
$progress = $this->get_progress_request($taskid);
$progress_dic = json_decode($progress);
if ($progress_dic->err_no != 0 && $progress_dic->err_no != 26605){
return;
}else{
$data = $progress_dic->data;
$task_status = json_decode($data);
if ($task_status->status == 9){
echo('The task ' . $taskid . ' is in processing, task status: ' . $task_status->desc);
echo "
";
break;
}
echo('The task ' . $taskid . ' is in processing, task status: ' . $task_status->desc);
echo "
";
sleep(0.5);
}
}
$data_all=$this->get_result_request($taskid=$taskid);
$data_all = json_decode($data_all)->data;
$data_all=json_decode($data_all);
$message='';
for ($i=0;$i<count($data_all);$i++){
$message.=$data_all[$i]->onebest;
}
$this->data=$message;
}
}
public function get_data() {
return $this->data;
}
public function gene_params($apiname,$taskid="",$slice_id=""){
$appid = $this->appid;
$secret_key = $this->secret_key;
$upload_file_path = $this->upload_file_path;
$ts=time();
$md5 = md5($appid.$ts);
$signa = hash_hmac('sha1',$md5,$secret_key,true);
$signa=base64_encode($signa);
$file_len = filesize($this->upload_file_path);
$file_name = basename($this->upload_file_path);
if($apiname== $this->api_prepare){
$slice_num = 1;
$param_dict['app_id'] = $appid;
$param_dict['signa'] = $signa;
$param_dict['ts'] = $ts;
$param_dict['file_len'] = (string)($file_len);
$param_dict['file_name'] = $file_name;
$param_dict['slice_num'] = (string)($slice_num);
}elseif($apiname== $this->api_upload){
$param_dict['app_id'] = $appid;
$param_dict['signa'] = $signa;
$param_dict['ts'] = $ts;
$param_dict['task_id'] = $taskid;
$param_dict['slice_id'] = $slice_id;
}elseif($apiname == $this->api_merge){
$param_dict['app_id'] = $appid;
$param_dict['signa'] = $signa;
$param_dict['ts'] = $ts;
$param_dict['task_id'] = $taskid;
$param_dict['file_name'] = $file_name;
}elseif($apiname == $this->api_get_progress || $apiname == $this->api_get_result){
$param_dict['app_id'] = $appid;
$param_dict['signa'] = $signa;
$param_dict['ts'] = $ts;
$param_dict['task_id'] = $taskid;
}
return $param_dict;
}
public function gene_request($apiname, $data, $files='', $headers=''){
if($files!=''){
$data['content'] =$files['content'];
}
$jsonStr =$data;
if($apiname==$this->api_prepare||$apiname==$this->api_merge||$apiname==$this->api_get_progress||$apiname==$this->api_get_result){
$header= array(
"Content-Type"=>"application/x-www-form-urlencoded;charset=UTF-8",
);
}
if($apiname==$this->api_upload){
$header = array(
"Content-Type"=>"multipart/form-data;",
);
}
$url = $this->lfasr_host . $apiname;
$rt=$this->http_post_json($url, $jsonStr, $header);
$result = json_decode($rt[1],true);
if ($result["ok"] == 0){
echo("success:".$apiname);
echo "
";
return $rt[1];
}else{
return $rt[1];
}
}
# 预处理gene_request
public function prepare_request(){
return $this->gene_request($apiname=$this->api_prepare,
$data=$this->gene_params($this->api_prepare));
}
#上传
public function upload_request($taskid, $upload_file_path){
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime = finfo_file($finfo, $upload_file_path);
finfo_close($finfo);
$curlFile = curl_file_create(
$upload_file_path,
$mime,
pathinfo(
$upload_file_path,
PATHINFO_BASENAME
)
);
$files["filename"] = $this->gene_params($this->api_upload)["slice_id"];
$files["content"] = $curlFile;
$response = $this->gene_request($this->api_upload,
$data=$this->gene_params($this->api_upload, $taskid=$taskid,$slice_id=$this->sig->getNextSliceId()),$files=$files);
return $response;
}
public function merge_request($taskid){
return $this->gene_request($this->api_merge, $data=$this->gene_params($this->api_merge, $taskid=$taskid));
}
# 获取进度
public function get_progress_request($taskid){
return $this->gene_request($this->api_get_progress, $data=$this->gene_params($this->api_get_progress, $taskid=$taskid));
}
# 获取结果
public function get_result_request($taskid){
$result=$this->gene_request($this->api_get_result, $data=$this->gene_params($this->api_get_result, $taskid=$taskid));
return $result;
}
#请求
public function http_post_json($url, $jsonStr,$header)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonStr);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
return array($httpCode, $response);
}
}
$sig = new Sliceidgenerator();
$app_id = 'xxxx';
$secret_key = 'xxxxx';
$file_path = 'D:\WWW\tp5\public\audio\10s.wav';
$api = new Fx_Api($file_path,$app_id,$secret_key,$sig);
$api->run();
print_r("转写结果：");
print_r($api->get_data());
运行结果如下图
