Upload and attach to a post multiple image files [closed]

You’ll need to add brackets to the name of your multiple input form element for PHP to interpret it as an array.

<input type="file" multiple name="thumbnail[]" id="thumbnail">

You’ll then get an array named ‘thumbnail’ with 5 arrays within it. See this comment on php.net for a breakdown of the structure.

Edit: Notice the difference in what is returned for a single vs a multiple file input. Here’s an example with two form fields, one a single file upload and the other a multiple.

<pre>
<?php if ($_FILES) {
    print_r($_FILES);
}
?>
</pre>

<form id="frontpost" method="post" enctype="multipart/form-data">
    <input type="file" name="single">
    <input type="file" multiple name="multiple[]">
    <button type="submit">Submit</button>
</form>

Which prints:

[single] => Array
    (
        [name] => foo.txt
        [type] => text/html
        [tmp_name] => /path/to/tmp/php/qwqerqrq
        [error] => 0
        [size] => 1621
    )

[multiple] => Array
    (
        [name] => Array
            (
                [0] => bar.txt
                [1] => baz.txt
            )

        [type] => Array
            (
                [0] => text/plain
                [1] => text/plain
            )

        [tmp_name] => Array
            (
                [0] => /path/to/tmp/php/vwvwrvwrv
                [1] => /path/to/tmp/php/wqerverhw
            )

        [error] => Array
            (
                [0] => 0
                [1] => 0
            )

        [size] => Array
            (
                [0] => 36976
                [1] => 58355
            )

    )

If your code is setup expecting the structure of a single file in $_FILES, you’ll need to update it to work with the very different structure of a multi-file upload.

Related Posts: