PHP从ajax接收大文件

Question

I am trying to send file to PHP via ajax. The problem is that PHP starts before file is fully uploaded, so $_FILES is empty.

    var data = new FormData();

    data.append('file', $('#file').prop('files')[0]);

    e.preventDefault();
    $.ajax({
        xhr: function () {
            var xhr = $.ajaxSettings.xhr();
            xhr.upload.onprogress = function (e) {
            };
            return xhr;
        },
        url: 'upload.php',
        type: 'POST',
        data: data,
        contentType: false,
        cache: false,
        processData: false
    });
});

http://joxi.net/5md7GgdC3ez7wr