使用 PHP 检索上传的 Blob

2022-01-15 00:00:00 xmlhttprequest php javascript html ajax

我有一个创建 blob 并将其发布到 PHP 文件的脚本.这是我的代码:

I have a script that is creating a blob and posting it to a PHP file. Here is my code:

HTML/Javascript:

<script type="text/javascript">
    function upload() {

    var data = new FormData();
    data.append('user', 'person');

    var oReq = new XMLHttpRequest();
    oReq.open("POST", 'upload.php', true);
    oReq.onload = function (oEvent) {
      // Uploaded.
    };

    var blob = new Blob(['abc123'], {type: 'text/plain'});

    oReq.send(blob);
}
</script>

<button type="button" onclick="upload()">Click Me!</button>

PHP:

<?php
var_dump($_POST);
?>

当我查看我的开发人员控制台时，我的 PHP 页面上没有收到任何 $_POST 数据.我需要知道如何检索发布到 PHP 脚本的文本文件.

When I look at my developer console, I am not getting any $_POST data on my PHP page. I need to know how to retrieve the text file being posted to PHP script.

非常感谢任何帮助！

推荐答案

可以从 php://input 中读取 blob 中的数据，如

The data from the blob can be read from php://input, as in

<?php
var_dump(file_get_contents('php://input'));

但是，如果您想使用表单数据对象发送多条数据，它就像一个普通的多部分/表单数据帖子.所有字符串都可以通过 $_POST 获得，所有 blob 和文件都可以通过 $_FILES 获得.

If however you want to send multiple pieces of data with a form data object it would be like a normal multipart/form-data post. All string would be available through $_POST and all blobs and file through $_FILES.

function upload() {

    var data = new FormData();
    var oReq = new XMLHttpRequest();
    oReq.open("POST", 'upload.php', true);
    oReq.onload = function (oEvent) {
      // Uploaded.
    };

    var blob = new Blob(['abc123'], {type: 'text/plain'});
    data.append('file', blob);
    oReq.send(data);
}

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