代码点火器 - 上传多个文件并显示文件 - Codeigniter - Upload multiple files and displaying files 小贝子编程网

我的 Web 应用程序只允许上传一个文件，这是一个问题，因为用户希望能够在必要时提交 2 个或更多文件。请问我如何允许多个文件上传并显示这些文件由其他类型的用户下载？

型

public function upload_docs($data)
{
$this->db->where('homework_id',$data['homework_id']);
$this->db->where('student_id',$data['student_id']);
$q = $this->db->get('submit_assignment');
if ( $q->num_rows() > 0 ) 
{
$this->db->where('homework_id',$data['homework_id']);
$this->db->where('student_id',$data['student_id']);
$this->db->update('submit_assignment',$data);
} else {
$this->db->insert('submit_assignment',$data);
}
}

控制器

public function upload_docs()
{
$homework_id         = $_REQUEST['homework_id'];
$student_id          =$_REQUEST['student_id'];
$data['homework_id'] = $homework_id;
$data['student_id']  = $student_id;
$data['message']     = $_REQUEST['message'];
// $data['id']=$_POST['assigment_id'];
$is_required=$this->homework_model->check_assignment($homework_id,$student_id);
$this->form_validation->set_rules('message', $this->lang->line('message'), 'trim|required|xss_clean');
$this->form_validation->set_rules('file', $this->lang->line('attach_document'), 'trim|xss_clean|callback_handle_upload['.$is_required.']');
if ($this->form_validation->run() == FALSE) {
$msg=array(
'message'=>form_error('message'),
'file'=>form_error('file'),
);
$array = array('status' => 'fail', 'error' => $msg, 'message' => '');
}else{
if (isset($_FILES["file"]) && !empty($_FILES['file']['name'])) {
$time     = md5($_FILES["file"]['name'] . microtime());
$fileInfo = pathinfo($_FILES["file"]["name"]);
$img_name = $time . '.' . $fileInfo['extension'];           
$data['docs'] =  $img_name;
move_uploaded_file($_FILES["file"]["tmp_name"], "./uploads/homework/assignment/" . $data['docs']);
$data['file_name']=$_FILES["file"]['name'];
$this->homework_model->upload_docs($data);
}
$array = array('status' => 'success', 'error' => '', 'message' => $this->lang->line('success_message'));
}
echo json_encode($array);
}
public function handle_upload($str,$is_required)
{
$image_validate = $this->config->item('file_validate');
if (isset($_FILES["file"]) && !empty($_FILES['file']['name']) && $_FILES["file"]["size"] > 0) {
$file_type         = $_FILES["file"]['type'];
$file_size         = $_FILES["file"]["size"];
$file_name         = $_FILES["file"]["name"];
$allowed_extension = $image_validate['allowed_extension'];
$ext               = pathinfo($file_name, PATHINFO_EXTENSION);

$allowed_mime_type = $image_validate['allowed_mime_type'];
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mtype = finfo_file($finfo, $_FILES['file']['tmp_name']);
finfo_close($finfo);
if (!in_array($mtype, $allowed_mime_type)) {
$this->form_validation->set_message('handle_upload', 'File Type Not Allowed');
return false;
}
if (!in_array($ext, $allowed_extension) || !in_array($file_type, $allowed_mime_type)) {
$this->form_validation->set_message('handle_upload', 'Extension Not Allowed');
return false;
}
if ($file_size > $image_validate['upload_size']) {
$this->form_validation->set_message('handle_upload', $this->lang->line('file_size_shoud_be_less_than') . number_format($image_validate['upload_size'] / 1048576, 2) . " MB");
return false;
}
return true;
} else {
if($is_required==0){
$this->form_validation->set_message('handle_upload', 'Please choose a file to upload.');
return false;
}else{
return true;
}
}

}

视图

<form id="upload" role="form" method="post" class="ptt10" enctype="multipart/form-data" action="upload_docs">
<div class="modal-body pt0">
<div class="row">
<input type="hidden" name="student_id" value="<?php echo $student_id; ?>">
<input type="hidden" id="homework_id"  name="homework_id">
<input type="hidden" id="assigment_id" name="assigment_id">
<div class="col-sm-12">
<div class="form-group">
<label for="pwd"><?php echo $this->lang->line('message'); ?></label>
<textarea type="text" id="assigment_message" name="message" class="form-control "></textarea>
</div> 
</div>
<div class="col-sm-12">
<div class="form-group">
<label for="pwd"><?php echo $this->lang->line('attach_document'); ?></label>
<input type="file" id="file" name="file" class="form-control filestyle">
</div>
</div>
<p id="uploaded_docs"></p>
</div>

</div>
<div class="box-footer">
<div class="" id="footer_area">
<button type="submit" form="upload" class="btn btn-info pull-right" id="submit" data-loading-text='Please wait...'><?php echo $this->lang->line('save'); ?></button>
</div>
</div>
</form>

这是像这样显示的

控制器

public function assigmnetDownload($doc)
{
$this->load->helper('download');
$name     = $this->uri->segment(5);
$ext      = explode(".", $name);
$filepath = "./uploads/homework/assignment/" . $doc;
$data     = file_get_contents($filepath);
force_download($name, $data);
}

视图

<table class="table table-hover table-striped table-bordered example">
<thead>
<tr>
<th><?php echo $this->lang->line('name') ?></th>
<th><?php echo $this->lang->line('message') ?></th>
<th class="text-right"><?php echo $this->lang->line('action') ?></th>
</tr>
</thead>
<tbody id="homework_docs_result">
</tbody>
</table>

感谢大家帮助我。我按照你们的指示做了。但是，我注意到我现在可以选择多个文件，但卡在保存按钮上。当我点击时，没有任何反应。数据未提交。这就是我到目前为止所做的

控制器

if (isset($_FILES["file"])){
foreach($_FILES["file"] as $file){ 
if(!empty($file["name"])){
$time     = md5($file["file"]['name'] . microtime());
$fileInfo = pathinfo($file["file"]["name"]);
$img_name = $time . '.' . $fileInfo['extension'];           
$data['docs'] =  $img_name;
move_uploaded_file($file["file"]["tmp_name"], "./uploads/homework/assignment/" . $data['docs']);
$data['file_name']=$file["file"]['name'];
$this->homework_model->upload_docs($data);
}
$array = array('status' => 'success', 'error' => '', 'message' => $this->lang->line('success_message'));
}
echo json_encode($array);
}
}
}

视图

<form id="upload" role="form" method="post" class="ptt10" enctype="multipart/form-data" action="uploaded_docs">
<input type="file"  multiple=""  id="file" name="file[]" class="form-control filestyle">
<button type="submit" form="upload" class="btn btn-info pull-right" id="submit" data-loading-text=' Please wait'><?php echo $this->lang->line('save'); ?></button>
</form>

HTML

<input type="file" id="file" name="file[]" class="form-control filestyle">

将名称设置为file[]将接受文件数组

.PHP

if (isset($_FILES["file"]){
foreach($_FILES["file"] as $file){ //this loop will get one file from 'file[]' array at a time
if(!empty($file["name"])){
//your alreay written code
//replace $_FILES["file"] with $file
}
}
}

希望这个有帮助:)

一些提示，如果有帮助的话。不要忘记投票加强。我们走吧。。。

<form method="post" action="upload_docs" enctype="multipart/form-data">
<input name="filesToUpload[]" type="file" multiple="" />
</form>

在您的控制器上，这很简单...

if(isset($_FILES['filesToUpload'])) {
foreach ($_FILES['filesToUpload'] as $fileUp) {
$time = md5($fileUp["file"]['name'].microtime());
$fileInfo = pathinfo($fileUp["file"]["name"]);
$img_name = "{$time}.{$fileInfo['extension']}";
$data['docs'] = $img_name;
move_uploaded_file($fileUp["file"]["tmp_name"], "./uploads/homework/assignment/{$data['docs']}");
$data['file_name']=$fileUp["file"]['name'];
$this->homework_model->upload_docs($data);
}
}

要显示多个文件，您需要使用与上传相同的概念

foreach($files as $file){ ... }

我希望我有所帮助。成功！

设置属性multiple将允许通过按ctrl一次选择多个文件，将名称设置为数组(file[](将允许存储多个文件名。

<input type="file" id="file" name="file[]" class="form-control filestyle" multiple>

但是，如果您不希望用户一次上传多个文件，则必须创建多个与数组同名的input字段(file[](

<input type="file" id="file" name="file[]" class="form-control filestyle">
<input type="file" id="file1" name="file[]" class="form-control filestyle">
...
...

在你的控制器中，你必须遍历每个元素，因为它现在是一个数组。

foreach($_FILES["file"]['name'] as $file){ //single element 
echo $file; // returns the name of file
// your-logic-to-upload
}

如果您在上传多个文件时遇到问题，请参阅此处、此处和此处。希望对您有所帮助。

代码点火器 - 上传多个文件并显示文件

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