我有使用 <input type="file"> 上传单个文件的经验.但是，我无法一次上传多个文件.
例如，我想选择一系列图像，然后一次性将它们上传到服务器.
如果可能，最好使用单个文件输入控件.
有谁知道如何做到这一点?
这在 PHP 中的文件上传.
I have experience doing this with single file uploads using <input type="file">. However, I am having trouble doing uploading more than one at a time.
For example, I'd like to select a series of images and then upload them to the server, all at once.
It would be great to use a single file input control, if possible.
Does anyone know how to accomplish this?
This is possible in HTML5. Example (PHP 5.4):
<!doctype html>
<html>
<head>
<title>Test</title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input type="file" name="my_file[]" multiple>
<input type="submit" value="Upload">
</form>
<?php
if (isset($_FILES['my_file'])) {
$myFile = $_FILES['my_file'];
$fileCount = count($myFile["name"]);
for ($i = 0; $i < $fileCount; $i++) {
?>
<p>File #<?= $i+1 ?>:</p>
<p>
Name: <?= $myFile["name"][$i] ?><br>
Temporary file: <?= $myFile["tmp_name"][$i] ?><br>
Type: <?= $myFile["type"][$i] ?><br>
Size: <?= $myFile["size"][$i] ?><br>
Error: <?= $myFile["error"][$i] ?><br>
</p>
<?php
}
}
?>
</body>
</html>
Here's what it looks like in Chrome after selecting 2 items in the file dialog:
And here's what it looks like after clicking the "Upload" button.
This is just a sketch of a fully working answer. See PHP Manual: Handling file uploads for more information on proper, secure handling of file uploads in PHP.
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