如何从函数中检索文件名？

如何实现这一点？当用户单击“Cancel”按钮，在包含变量var Image_file_name的Cancel按钮函数中检索输入文件的名称？可以使用ancemensage.php页面中的$get方法从函数中检索文件名吗？下面是我的尝试，但它不是检索文件名，它只是在检索空白。

下面是控制“取消”按钮的表单代码和javascript函数：

var $fileImage = $("<form action='imageupload.php' 
      method='post'enctype='multipart/form-data' target='upload_target' onsubmit='return 
      startImageUpload(this);' class='imageuploadform' ><label>" + 

"Image File: <input name='fileImage' type='file' class='fileImage' /></label><br/>
<br/><label class='imagelbl'>" + 

"<input type='submit' name='submitImageBtn' class='sbtnimage' value='Upload'/>  
</label>" + 

"<input type='button' name='imageCancel' class='imageCancel' value='Cancel'/>
</label>" + 

"<iframe class='upload_target' name='upload_target' src='#' style='width:0;height:0;border:0px;solid;#fff;'></iframe></form>")

...

 var _cancelimagecounter = cancelimagecounter;


    $(".imageCancel").click(function() {
    var image_file_name = <?php echo json_encode($image_file_name); ?>;

    jQuery.ajax("cancelimage.php?fileImage=" + image_file_name)
        .done(function(data) {

        $(".imagemsg" + _cancelimagecounter).html(data);
    });

    return stopImageUpload();

});     

下面是cancelimage.php脚本，它使用$ GET方法从var image_file_name中获取文件名：

<?php

...

$image_file_name = $_GET["fileImage"];

    echo "File Upload was Canceled";

        $imagecancelsql = "DELETE FROM Image 
        WHERE ImageFile = 'ImageFiles/". mysql_real_escape_string($image_file_name)."'";

    mysql_query($imagecancelsql);

    mysql_close();


?>  

Filename is far form the issue here.... But your fileName is not displaying because you are trying to use $_GET["fileImage"];

The Form was submitted via enctype='multipart/form-data and <input name='fileImage' type='file'

You should use $_FILES instead ...

Your file name would be

$image_file_name = $_FILES['fileImage']['name'] ;