PHP文件上传之多文件上传的实现思路，

<input type="file" name="file1">
<input type="file" name="file2">
<input type="file" name="file3">
<input type="file" name="file4">

Array
(
[file1] => Array
(
[name] => 8.png
[type] => image/png
[tmp_name] => G:\wamp\tmp\php737.tmp
[error] => 0
[size] => 200
)
[file2] => Array
(
[name] => 28.png
[type] => image/png
[tmp_name] => G:\wamp\tmp\php738.tmp
[error] => 0
[size] => 6244
)
[file3] => Array
(
[name] => 54a296f8n6787b34c.png
[type] => image/png
[tmp_name] => G:\wamp\tmp\php739.tmp
[error] => 0
[size] => 3143
)
[file4] => Array
(
[name] => 54c0573dncb4db6f7.jpg
[type] => image/jpeg
[tmp_name] => G:\wamp\tmp\php788.tmp
[error] => 0
[size] => 5404
)
)

include('./functions.php');

$path = './uploads/'; // 此目录需要手动创建

foreach($file as $v){
$info = uploadFile($v,$path);
⑤判断上传状态
if($info['isok']){
echo '上传成功'.$info['message'];
} else {
echo '上传失败'.$info['message'];
}
}

<input type='file' name="file[]">
<input type='file' name="file[]">
<input type='file' name="file[]">

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

Array
(
[userpic] => Array
(
[name] => Array
(
[0] => 8.png
[1] => 9b2d7581fba543ec9bcf95e91018915a.gif
[2] => 12.jpg
)
[type] => Array
(
[0] => image/png
[1] => image/gif
[2] => image/jpeg
)
[tmp_name] => Array
(
[0] => G:\wamp\tmp\php85E5.tmp
[1] => G:\wamp\tmp\php85E6.tmp
[2] => G:\wamp\tmp\php8635.tmp
)
[error] => Array
(
[0] => 0
[1] => 0
[2] => 0
)
[size] => Array
(
[0] => 200
[1] => 16503
[2] => 19443
)
)
)

Array(
[name] => 54c0573dncb4db6f7.jpg
[type] => image/jpeg
[tmp_name] => G:\wamp\tmp\php788.tmp
[error] => 0
[size] => 5404
)

foreach($file['name'] as $key=>$value){
$data['name'] = $file['name'][$key];
$data['type'] = $file['type'][$key];
$data['tmp_name'] = $file['tmp_name'][$key];
$data['error'] = $file['error'][$key];
$data['size'] = $file['size'][$key];
$info = uploadFile($data,$path);

if($info['isok']){
echo '上传成功'.$info['message'];
} else {
echo '上传失败'.$info['message'];
}
}

$data['name'] = $file['name'][0]; // 相当于取出了第一个文件的名字
$data['type'] = $file['type'][0]; // 相当于取出了第一个文件的类型

$data = array(
[name] => 54c0573dncb4db6f7.jpg
[type] => image/jpeg
[tmp_name] => G:\wamp\tmp\php788.tmp
[error] => 0
[size] => 5404
);