我有一个 php 表单，行数未知，用户可以在其中上传文件。为此，我使用二维数组。
<form action="upload_file_module.php" method="post" enctype="multipart/form-data">
<? $i = 0; ?>
<table>
<tr>
<td>
<input type="hidden" name="row[<? echo $i; ?>][row_name]" value = "one"/> One
</td>
<td>
<input type="file" name="row[<? echo $i; ?>][fileToUpload]" >
</td>
<?
$i++;
?>
</tr>
<tr>
<td>
<input type="hidden" name="row[<? echo $i; ?>][row_name]" value = "two"/> Two
</td>
<td>
<input type="file" name="row[<? echo $i; ?>][fileToUpload]" >
</td>
<?
$i++;
?>
</tr>
</table>
<input type="submit" value="Upload" name="submit">
所有文件应保存在不同的文件夹中。
<?php
$unique_id = "folder";
$unique_id = $unique_id . '/';
foreach ( $_POST['row'] as $val ) {
$target_dir = $unique_id;
$target_dir = $target_dir . "/" . $val. "/";
if (!file_exists($target_dir)) {
mkdir($target_dir, 0777, true);
}
echo '<table>';
echo '<tr>';
echo '<td>', $val['row_name'], '</td>';
echo '<td>', $val['fileToUpload'], '</td>';
echo '</tr>';
echo '</table>';
$target_file = $target_dir . basename($_FILES[$val['fileToUpload']]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 900000000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.<br>";
} else {
echo "Sorry, there was an error uploading your file.<br>";
}
}
}
但实际上它没有看到任何文件，输出如下：
one
抱歉，文件已存在。抱歉，您的文件未上传。
two
抱歉，文件已存在。抱歉，您的文件未上传。
除了评论中的内容之外，还有一些需要更改的内容。主要问题是：
- 您试图将两个文件和发布数据放入一个数组中，当两者都
$_POST and $_FILES就 PHP 本质而言，它们是完全独立的实体。所以你最终会尝试访问单个数组row当实际上有两个时row这两个超全局变量中的数组。
- Your
$target_file从未被宣布过，而你的$target_dir有太多斜杠。
- 该项目1让您访问
$val错误的方法。
这些是我提出的最终更正，保留了适合您自己的环境的逻辑。每个部分的解释都在代码中注释了。
HTML 表单
<!DOCTYPE html>
<html>
<head></head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
<table>
<?php $counter = 2; // number of fields you want to be printed
for($i = 0; $i < $counter; $i++): // do proper counting ?>
<tr>
<td>
<input type="hidden" name="row[]" value="<?php echo $i; ?>"/> File:
</td>
<td>
<input type="file" name="row[]" >
</td>
</tr>
<?php endfor; ?>
</table>
<input type="submit" value="Upload" name="submit">
</form>
</body>
</html>
PHP 后处理脚本
<?php
$unique_id = "upload"; // just changed to reproduce
$unique_id = $unique_id . '/';
foreach ($_POST['row'] as $val) {
$target_dir = $unique_id;
$target_file = $_FILES['row']['name'][$val]; //actually defining this var
$target_dir = $target_dir . $val. "/"; // no need to index assoc nor '/'
if (!file_exists($target_dir)) {
mkdir($target_dir, 0777, true);
}
$imageFileType = pathinfo($target_dir,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
// Check if file already exists
if (file_exists($target_file)) {
die("Sorry, file already exists."); // die if error
}
// Check file size
if ($_FILES['row']['size'][$val] > 900000000) { // using the proper index reference for file
die("Sorry, your file is too large."); //die if error
}
// Check if there are error msg in $_FILES
if ($_FILES['row']['error'][$val] != 0) {
die("Sorry, your file was not uploaded."); // die if error
// if everything is ok, try to upload file
} else {
// point your move_files with the final name of the actual file to be moved
if (move_uploaded_file($_FILES['row']['tmp_name'][$val], $target_dir.'/'.$_FILES['row']['name'][$val])) {
echo "The file ". basename($_FILES['row']['name'][$val]). " has been uploaded.<br>";
} else {
die("Sorry, there was an error uploading your file.");
}
}
}
最终输出（上传两个虚拟文件后）
Array
(
[row] => Array
(
[0] => 0
[1] => 1
)
[submit] => Upload
)
Array
(
[row] => Array
(
[name] => Array
(
[0] => dummyfile1.docx
[1] => dummyfile2.mpp
)
[type] => Array
(
[0] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
[1] => application/vnd.ms-project
)
[tmp_name] => Array
(
[0] => C:\Windows\Temp\php73DA.tmp
[1] => C:\Windows\Temp\php73DB.tmp
)
[error] => Array
(
[0] => 0
[1] => 0
)
[size] => Array
(
[0] => 0
[1] => 180224
)
)
)
The file dummyfile1.docx has been uploaded.
The file dummyfile2.mpp has been uploaded.
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