PHP多个图像调整大小不起作用

I have a multiple image resizing script.Here is the HTML part

<td><input type="file" name="fileUpload[]"><br>
    <input type="file" name="fileUpload[]"><br>
    <input type="file" name="fileUpload[]"><br>
    <input type="file" name="fileUpload[]"><br>
    <input type="file" name="fileUpload[]"><br></td>

And here is the php part

for($i=0;$i<count($_FILES["fileUpload"]["name"]);$i++)
    {
        if(trim($_FILES["fileUpload"]["tmp_name"][$i]) != "")
        {
            $images = $_FILES["fileUpload"]["tmp_name"][$i];
            $new_images = "thumbnails_".$_FILES["fileUpload"]["name"][$i];
            copy($_FILES["fileUpload"]["tmp_name"][$i],"uploads/".$_FILES["fileUpload"]["name"][$i]);
            $width=100; 
            $size=GetimageSize($images);
            $height=round($width*$size[1]/$size[0]);
            $images_orig = ImageCreateFromJPEG($images);
            $photoX = ImagesX($images_orig);
            $photoY = ImagesY($images_orig);
            $images_fin = ImageCreateTrueColor($width, $height);
            ImageCopyResampled($images_fin, $images_orig, 0, 0, 0, 0, $width+1, $height+1, $photoX, $photoY);
            ImageJPEG($images_fin,"uploads/".$new_images);
            ImageDestroy($images_orig);
            ImageDestroy($images_fin);

But its not resizing the images.What can be the reason? Thanks

Here's your problem: $i<count($_FILES["fileUpload"]["name"]). $_FILES["fileUpload"] is an array of files, each of which has a name key. $_FILES["fileUpload"]["name"], on the other hand, is undefined. You need to do `$i<count($_FILES["fileUpload"]).

Also, as a general rule, don't do this kind of loop:

for($i=0; $i<count(...); $i++) {
    ...
}

On a small array, that's fine, but with a big array, calculating count() on each loop is a huge hit. Better to do this:

$count = count(...);
for($i=0; $i<$count; $i++) {
    ...
}

copy($_FILES["fileUpload"]["tmp_name"][$i],"uploads/".$_FILES["fileUpload"]["name"][$i]);

change this to move_uploaded_file(...);

Also this is wrong:

for($i=0;$i<count($_FILES["fileUpload"]["name"]);$i++)

change it to:

for($i=0;$i<count($_FILES["fileUpload"]);$i++)