我有这种形式，需要上传多个文件（最多10个文件）。这是html的样子：
<form action="fileupload.php" method="post" enctype="multipart/form-data">
<tr><td><input type="hidden" name="consultant_id" value="<?php echo $consult_id; ?>"></td></tr>
<tr><td>Offer letter:</td><td> Doc: <input type="file" name="myfile[]"></td></tr>
<tr><td>Project acceptance agreement:</td><td> Doc: <input type="file" name="myfile[]"></td></tr>
<tr><td>Employee book:</td><td> Doc: <input type="file" name="myfile[]"></td></tr>
<tr><td>W4 :</td><td> Doc: <input type="file" name="myfile[]"></td></tr>
<tr><td>State W4 :</td><td> Doc: <input type="file" name="myfile[]"></td></tr>
<tr><td><input type="submit" name="submit" value="Upload"> </td></tr>
</form></table>
我想将文件上传到服务器并将它们各自的路径存储在数据库（MySql）中。现在，当我输入所有文件字段（上传所有10个文件）时，下面的PHP代码工作得很棒，但是当我只想上传一些文件（比如5）时失败了。这是代码：
<?php
$consultant_id = $_POST['consultant_id'];
echo $consultant_id;
$verified_start_date = $_POST['verified_start_date'];
// Assign valid types
$valid_mime = array(
'application/pdf',
'image/jpeg',
'image/jpg',
);
function upload($files, $dir, $size_limit=1024, $prevent_duplicate=false){
global $valid_mime;
// $files must be given.
if(!isset($files)) return false;
// Look for $valid_mime array.
isset($valid_mime) and is_array($valid_mime) or die('Error in data resources, valid_mime array not found.');
// Make directory if it does not exists. set permission to 0777.
is_dir($dir) and chmod($dir, 0777) or mkdir($dir, 0777, true);
//is_dir($consultant_id) and ($dir, 0777) or mkdir($dir/$consultant_id, 0777, true);
$count = 1;
foreach($files as $file){
$file['error'] === UPLOAD_ERR_OK or die('Error in uploading file(s).');
// Check uploaded-file type.
in_array($file['type'], $valid_mime) or die();
// Set size_limit in KB.
$file['size'] > $size_limit*1024 and die('The uploaded file exceeds the maximum file size.');
$file_extension = strrchr($file['name'], '.');
$filename = basename($file['name'], $file_extension);
$file_path = "{$dir}/{$filename}{$file_extension}";
// Move uploaded-file from php temp folder to desire one.
move_uploaded_file($file["tmp_name"], $file_path);
// Make an array of filepaths
$output[] = $file_path;
}
// Change permission of folder according to security issues.
chmod($dir, 0755);
return $output;
}
/////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////// Controller Section ////////////////////////////////
// Assign tmp_arr from $_FILES['myfile'] and do die if there is any problem.
$tmp_arr = (isset($_POST['submit']) and isset($_FILES['myfile'])) ? $_FILES['myfile'] : die('Error in posting data.');
// Create an array with desired structure.
for($i=0; $i<count($tmp_arr['name']); $i++){
$files[] = array(
'name' => $tmp_arr['name'][$i],
'type' => $tmp_arr['type'][$i],
'tmp_name' => $tmp_arr['tmp_name'][$i],
'error' => $tmp_arr['error'][$i],
'size' => $tmp_arr['size'][$i],
);
}
// size_limit in KB
$path_arr = upload($files, './public/'.$consultant_id, 1024, true);
?>
我没有提到在数据库中输入数据的部分，因为我知道问题出现在$ tmp_arr [＆＃39;错误＆＃39;] [$ i]或$ file [＆＃39;错误＆＃ 39;] === UPLOAD_ERR_OK或死亡（＆＃39;上传文件时出错。＆＃39;）;
请看一下。
答案 0 :(得分：0)
问题似乎是当您输入空白文件时，它会返回'error'值4，表示UPLOAD_ERR_NO_FILE。因此，由于该字段与UPLOAD_ERR_OK不匹配，您可以通过调用die在复制第一个空白后停止任何文件来立即停止所有代码。如果第一个字段为空白，则无法进入move_uploaded_file。如果十分之三为空白，则前两个文件将被复制，当第三个文件被处理时，它将停止任何进一步的文件。但是你仍然会在上传文件时看到错误＆＃34;错误。＆＃34;
编辑：
<?php
$consultant_id = $_POST['consultant_id'];
echo $consultant_id;
$verified_start_date = $_POST['verified_start_date'];
// Assign valid types
$valid_mime = array(
'application/pdf',
'image/jpeg',
'image/jpg',
);
function upload($files, $dir, $size_limit=1024, $prevent_duplicate=false){
global $valid_mime;
// $files must be given.
if(!isset($files)) return false;
//please use proper if statements. This is confusing.
//isset($valid_mime) and is_array($valid_mime) or die('Error in data resources, valid_mime array not found.');
// Look for $valid_mime array.
if(!isset($valid_mime) || !is_array($valid_mime)) {
die('Error in data resources, valid_mime array not found.');
}
//please use proper if statements. This is confusing.
// is_dir($dir) and chmod($dir, 0777) or mkdir($dir, 0777, true);
// Make directory if it does not exists. set permission to 0777.
if(!is_dir($dir)) {
mkdir($dir, 0777, true);
} else {
//try to chmod if the directory does exist
chmod($dir, 0777);
}
if(!is_writable($dir)){
die('Error unable to write to specified directory.');
}
foreach($files as $key=>$file){
//switch case on the error code
//you can find a list of these error codes at: http://php.net/manual/en/features.file-upload.errors.php
switch($file['error']){
default:
//triggered if an unknown error happened. Newer php versions might bring new constants.
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'An unknown error occurred');
break;
case UPLOAD_ERR_INI_SIZE:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'File size exceeds ini setting');
break;
case UPLOAD_ERR_FORM_SIZE:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'File size exceeds MAX_FILE_SIZE setting');
break;
case UPLOAD_ERR_PARTIAL:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'File was only partially uploaded');
break;
case UPLOAD_ERR_NO_FILE:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'File input was blank');
break;
case UPLOAD_ERR_NO_TMP_DIR:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'Missing temporary folder');
break;
case UPLOAD_ERR_CANT_WRITE:
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'Failed to write file to disk');
break;
case UPLOAD_ERR_OK:
//upload worked fine
// Check uploaded-file type.
if(in_array($file['type'], $valid_mime)){
// Set size_limit in KB.
if($file['size'] <= $size_limit*1024){
//get the file extension.
$file_extension = strrchr($file['name'], '.');
//get the filename
$filename = basename($file['name'], $file_extension);
//full filename and path
$file_path = "{$dir}/{$filename}{$file_extension}";
// Move uploaded-file from php temp folder to desire one.
// function returns true if the move was successful
if(move_uploaded_file($file["tmp_name"], $file_path)){
$output[$key] = array('error'=>false, 'message'=>'File was uploaded successfully', 'file'=>$file_path);
} else {
$output[$key] = array('error'=>true, 'message'=>'Unspecified error when moving the uploaded file');
}
} else {
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'The uploaded file exceeds the maximum file size');
}
} else {
//log error for this file
$output[$key] = array('error'=>true, 'message'=>'Failed to write file to disk');
}
}
}
// Change permission of folder according to security issues.
chmod($dir, 0755);
return $output;
}
/////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////// Controller Section ////////////////////////////////
// Assign tmp_arr from $_FILES['myfile'] and do die if there is any problem.
$tmp_arr = (isset($_POST['submit']) and isset($_FILES['myfile'])) ? $_FILES['myfile'] : die('Error in posting data.');
// Create an array with desired structure.
for($i=0; $i<count($tmp_arr['name']); $i++){
$files[] = array(
'name' => $tmp_arr['name'][$i],
'type' => $tmp_arr['type'][$i],
'tmp_name' => $tmp_arr['tmp_name'][$i],
'error' => $tmp_arr['error'][$i],
'size' => $tmp_arr['size'][$i],
);
}
// size_limit in KB
$path_arr = upload($files, './public/'.$consultant_id, 1024, true);
如果我这样做，这就是我要使用的功能。如果一个上传的文件存在问题，则不会停止上传剩余文件，并将'error'密钥从$ _FILES转换为更友好的用户消息。您可以轻松地遍历返回数组并检查布尔值＆＃39;错误＆＃39;查看特定文件是否有问题的关键。如果＆＃39;错误＆＃39;是的，您可以回复消息供用户查看。如果没有错误，则消息＆＃39;文件已成功上传＆＃39;可以显示。返回数组中的键对应于传入的数组中的相同键。因此$ file [0]与$ returnResult [0]是相同的文件，以便于参考。