问转换base64到声音文件在php音调声音是沙沙

EN

<?php 



if(isset($_POST['audio'])){

$data = str_replace('data:audio/wav;base64,', '', $_POST['audio']); 

 $data = base64_decode($data);

$track_name =   get_random_string(mt_rand(6,10)) . ".mp3";

$upl_dir    =    "../up/" . $track_name;

if( !file_put_contents($upl_dir, $data) ){

    $response['status']     =   1;

    $response['message']    =   "File could not be uploaded. Try again >later.";

echo $data;

echo "E1";

}

echo $data;

}

function base641()
    {

         Fr.voice.export(function(url){
    // console.log("Here is the base64 URL : " + url);
       base = url;
       ejem2 = 1;
     // alert("Check the web console for the URL");
     // $("<a href='"+ url +"' target='_blank'></a>")[0].click();

    }, "base64");

    };