文件上传中缺少文件类型

Question

我有一个页面,允许我上传CSV文件.使用PHP我然后获取CSV文件的内容并将它们插入MySQL数据库.我现在一直没有遇到任何问题.然后今天,我尝试上传文件,但它没有用.问题是似乎没有与CSV文件关联的文件类型.例如,在良好的上传中,我吐出的调试消息如下所示:

You uploaded a file: buylist_235.csv 
file type: application/vnd.ms-excel 
file size: 10456 

File is valid, and was successfully uploaded. Here is some more debugging info:Array (
        [csv] => Array
            (
                [name] => buylist_235.csv
                [type] => application/vnd.ms-excel
                [tmp_name] => C:\xampp\tmp\php3C1E.tmp
                [error] => 0
                [size] => 10456
            )
)

但是,当我上传带有调试消息的问题文件时,我注意到文件类型和文件大小为空.

You uploaded a file: buylist_235_1.csv
file type: 
file size: 0

Possible file upload attack!
Here is some more debugging info:Array
(
    [csv] => Array
        (
            [name] => buylist_235_1.csv
            [type] => 
            [tmp_name] => 
            [error] => 2
            [size] => 0
        )

)

任何人都有任何想法为什么文件类型为空？在Windows资源管理器中,如果我将鼠标悬停在这些文件中的任何一个上,则文件上的信息气球会显示"类型:Microsoft Excel逗号分隔值文件".但第二个文件有问题导致我的PHP呕吐而无法识别文件类型.

Answer 1

文件类型不是问题(我不认为).

你会看到error代码2在你的第二个例子块试图文件上传过程中返回,并没有写入临时存储(tmp_name是空的,size为0).

You uploaded a file: buylist_235_1.csv
file type: 
file size: 0

Possible file upload attack!
Here is some more debugging info:Array
(
    [csv] => Array
        (
            [name] => buylist_235_1.csv
            [type] => 
            [tmp_name] => 
            [error] => 2
            [size] => 0
        )

)

错误代码2是:UPLOAD_ERR_FORM_SIZE:上传的文件超出了HTML表单中指定的MAX_FILE_SIZE指令.

在表单HTML中调整此值.