URL url = new URL("https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=ru-RU");
URLConnection connection = url.openConnection();
File comFile = new File(file);

byte[] fileBArray = new byte[(int)comFile.length()];
FileInputStream fis = new FileInputStream(comFile);
fis.read(fileBArray);
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "audio/x-flac; rate=16000");
connection.setRequestProperty("Content-Length", Integer.toString(fileBArray.length));

OutputStreamWriter out = new OutputStreamWriter(
                        connection.getOutputStream());
out.write("myfile=");
for (int i = 0; i < fileBArray.length; i++) {
out.write(fileBArray[i]);
System.out.println(fileBArray[i]);
}

$file_to_upload = array('myfile'=>'@/home/mp3/say_comand2.flac');
print_r($file_to_upload);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=ru-RU");
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: audio/x-flac; rate=16000"));
curl_setopt($ch, CURLOPT_POSTFIELDS, $file_to_upload);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
$result=curl_exec ($ch);
curl_close ($ch);