如果使用XMLHttpRequest发送wav文件，如何在PHP上保存服务器上的wav文件？

Question

I am using the following snippet to send a wav file as a blob to the server which is written in PHP:

function upload(blob) {
    var xhr = new XMLHttpRequest();
    xhr.open('POST', '/upload.php', true);
    xhr.onload = function (e) {
        var result = e.target.result;
    };

    xhr.send(blob);
}

I am confused as to how I should handle the POST data on the server.

Answer 1

What you're looking for is php://input:

$fp = fopen("php://input", "r");
$wav_file = stream_get_contents($fp);

Note that I'm assuming blob in your example is an actual Blob, or ArrayBuffer, or File, and not just a bunch of text whose UTF8 interpretation is also a valid WAVE file.