我有一个html表单,上传文件到网站.

<?PHP
if(isset($_POST["Upload"])){
    echo "<pre>";
    print_r($_POST);
    print_r($_FILES);
    echo "</pre>";
}
?>

<form action="tester.PHP" method="post" enctype="multipart/form-data">
    <input type="hidden" name="Upload" value="1" />
    <input type="hidden" name="MAX_FILE_SIZE" value="4500000" />
    <input type="file" name="artImage" id="artImage" />
    <input type="submit" />
</form>

在旧服务器上工作得很好,但在新服务器上,它无缘无故地切掉了第一个字母.我不知道它是IIS设置还是PHP设置.
输出：

Array
(
    [Upload] => 1
    [MAX_FILE_SIZE] => 4500000
)
Array
(
    [artImage] => Array
        (
            [name] => easons_Change_(HD_Ready).jpg
            [type] => image/pjpeg
            [tmp_name] => C:\Windows\Temp\PHP99.tmp
            [error] => 0
            [size] => 498879
        )

)

旧服务器的输出,相同的代码,相同的文件：

Array
(
    [Upload] => 1
    [MAX_FILE_SIZE] => 4500000
)
Array
(
    [artImage] => Array
        (
            [name] => Seasons_Change_(HD_Ready).jpg
            [type] => image/pjpeg
            [tmp_name] => C:\WINDOWS\Temp\PHP6835.tmp
            [error] => 0
            [size] => 498879
        )

)