我是PHP的新手，如何使该代码支持多个图片上传？
我这里有3个按钮，每个按钮都可以上传单个图像。我需要让它支持多个上传图片。谢谢。
这是所有代码：
<?php
class Products extends CI_Controller{
function __construct()
{
parent::__construct();
if(!isset($_SESSION['user'])){
redirect('admin/dashboard');
}else{
$user=$_SESSION['user'][0];
if($user->perm==USER){
redirect('admin/denied');
}
}
$this->load->model('product_model');
$config['upload_path'] = 'uploads/';
$config['allowed_types'] = 'gif|jpg|png|jpeg|JPG|JPEG|GIF|PNG';
$config['max_size'] = '2000';
$this->load->library('upload', $config);
$this->load->helper('Ultils');
$this->form_validation->set_error_delimiters('<span class="help-inline msg-error" generated="true">', '</span>');
}
function index(){
$page = $this->input->get('page') ? $this->input->get('page') : 0;
$per_page = $this->input->get('per_page') ? $this->input->get('per_page') : 10;
$order = $this->input->get('order') ? $this->input->get('order') : 'DESC';
$config['base_url']= base_url() . 'index.php/admin/products?order='.$order;
$config['per_page']=$per_page;
$data['msg_label']=$this->config->item('msg_label');
$config['total_rows'] = $this->product_model->total(array(), array());
$this->pagination->initialize($config);
$data['list'] = $this->product_model->get("*,products.id as id,products.activated as activated", array(),array(),$page, $per_page, array('products.id' => 'DESC'));
$data['page_link'] = $this->pagination->create_links();
$this->template->write_view('content','backends/products/index',array('data'=>$data));
$this->template->render();
}
public function create(){
$error=null;
$images=array();
$image_path=null;
$insert_id =0;
$thumb=null;
if(isset($_SESSION['user'])){
if(isset($_POST['title'])){
$user=$_SESSION['user'][0];
$this->form_validation->set_rules('title','title', 'trim|required|min_length[5]|max_length[100]|xss_clean');
$this->form_validation->set_rules('price', 'price', 'trim|numeric|xss_clean');
$this->form_validation->set_rules('aim', 'aim', 'trim|required|xss_clean');
$this->form_validation->set_rules('content', 'content', 'trim|required|min_length[5]|max_length[2000]|xss_clean');
$this->form_validation->set_rules('provinces', 'provinces', 'trim|required|xss_clean');
$this->form_validation->set_rules('cities', 'cities', 'trim|required|xss_clean');
$this->form_validation->set_rules('categories', 'categories', 'trim|required|xss_clean');
if($this->form_validation->run()!=false){
$data['title']=preg_replace('/[\r\n]+/', "", $this->input->post('title'));
$data['price']=$this->input->post('price');
$data['aim']=$this->input->post('aim');
$data['content']=preg_replace('/[\r\n]+/', "", htmlspecialchars($this->input->post('content')));
$data['county_id']=$this->input->post('provinces');
$data['categories_id']=$this->input->post('categories');
$data['user_id']=$user->id;
$data['cities_id']=$this->input->post('cities');
$insert_id = $this->product_model->insert($data);
$allowed = array('gif','png' ,'jpg');
$filename = $_FILES['image']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if(in_array($ext,$allowed)) {
$upload_result=self::upload();
if($upload_result!=null){
$image_path=$upload_result;
array_push($images, $upload_result);
$this->form_validation->set_rules('image', 'image', 'callback_upload');
}else{
$error['error_upload_file']="Can not upload file, please check again";
}
}else{
$error['eror_upload_file']="Your upload file contains invalid allow upload file type";
}
$filename = $_FILES['image1']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if(in_array($ext,$allowed)) {
$upload_result=self::upload1();
if($upload_result!=null){
$image_path=$upload_result;
array_push($images, $upload_result);
$this->form_validation->set_rules('image', 'image', 'callback_upload');
}else{
$error['error_upload_file_1']="Can not upload file, please check again";
}
}else{
$error['eror_upload_file_1']="Your upload file contains invalid allow upload file type";
}
$filename = $_FILES['image2']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if(in_array($ext,$allowed)) {
$upload_result=self::upload2();
if($upload_result!=null){
$image_path=$upload_result;
array_push($images, $upload_result);
$this->form_validation->set_rules('image', 'image', 'callback_upload');
}else{
$error['error_upload_file_2']="Can not upload file, please check again";
}
}else{
$error['eror_upload_file_2']="Your upload file contains invalid allow upload file type";
}
if($insert_id!=0){
if($image_path!=null){
$config=array(
"source_image" => 'uploads/'.$image_path, //get original image
"new_image" => "uploads/thumbs", //save as new image //need to create thumbs first
"maintain_ratio" => true,
"width" => 200,
"height" => 200
);
$this->load->library('image_lib',$config);
$this->image_lib->resize();
$image_path= 'uploads/thumbs/'.$image_path;
$this->product_model->update(array('image_path'=>$image_path), array('id'=>$insert_id));
$this->load->model('images_model');
for ($i=0; $i < count($images); $i++) {
$this->images_model->insert(array('path'=>'uploads/'.$images[$i],'product_id'=>$insert_id));
}
}
$this->session->set_flashdata('msg_ok',$this->lang->line('add_successfully'));
redirect('admin/products/create');
}
}
}
; }else{
redirect('admin/dashboard');
}
$this->load->model('county_model');
$data['provinces']=$this->county_model->get();
$this->load->model('categories_model');
$data['categories']=$this->categories_model->get();
$this->template->write_view('content','backends/products/add',array('data'=>$data,'error'=>$error));
$this->template->render();
}
public function upload(){
if(isset($_FILES['image'])){
$filename=$_FILES['image']['name'];
$_FILES['image']['name']=rename_upload_file($filename);
}
if ($this->upload->do_upload('image'))
{
return $_FILES['image']['name'];
}
else
{
return null;
}
}
public function upload1(){
if(isset($_FILES['image1'])){
$filename=$_FILES['image1']['name'];
$_FILES['image1']['name']=rename_upload_file($filename);
}
if ($this->upload->do_upload('image1'))
{
return $_FILES['image1']['name'];
}
else
{
return null;
}
}
public function upload2(){
if(isset($_FILES['image2'])){
$filename=$_FILES['image2']['name'];
$_FILES['image2']['name']=rename_upload_file($filename);
}
if ($this->upload->do_upload('image2'))
{
return $_FILES['image2']['name'];
}
else
{
return null;
}
}
public function check_username_exist_add($name){
$data=$this->product_model->get_by_exact_name($name, 0, 1);
if ($data!=null)
{
$this->form_validation->set_message('check_username_exist_add', 'This name has exist');
return FALSE;
}
else
{
return TRUE;
}
}
public function check_username_exist_edit(){
$id=$this->input->post('id');
$name=$this->input->post('name');
$data=$this->product_model->get_by_name_and_diff_id($id,$name);
if($data!=null) {
$this->form_validation->set_message('check_username_exist_edit', 'This name has exist');
return FALSE;
} else {
return TRUE;
}
}
public function edit_get(){
if(isset($_GET['id'])){
$id=$this->input->get('id');
$data=parent::getDataView();
$data['obj']=$this->product_model->get_by_id($id);
$this->blade->render('backends/products/edit',array('data'=>$data));
}
}
public function edit_post(){
if(isset($_POST['id'])){
$id=$_POST['id'];
$name=$_POST['name'];
$data=parent::getDataView();
$this->form_validation->set_rules('name','name', 'trim|required|min_length[5]|max_length[60]|xss_clean|callback_check_username_exist_edit');
if($this->form_validation->run()){
$this->product_model->update(array('name'=>$name),array('id'=>$id));
}
$data['obj']=$this->product_model->get_by_id($id);
$this->blade->render('backends/products/edit',array('data'=>$data));
}
}
public function delete(){
if(isset($_GET['id'])){
$id=$this->input->get('id');
$product=$this->product_model->get_by_id($id);
if($product!=null){
$this->load->model('images_model');
$images=$this->images_model->get_by_product_id($id);
foreach ($images as $r) {
try {
unlink($r->path);
$this->images_model->remove_by_id($r->id);
} catch (Exception $e) {
}
}
try {
unlink($product[0]->image_path);
} catch (Exception $e) {
}
}
$this->product_model->remove_by_id($id);
redirect('admin/products');
}
}
public function activate(){
if(isset($_GET['id'])){
$id=$this->input->get('id');
echo $id;
$this->product_model->update(array('activated'=>1),array('id'=>$id));
}
redirect('admin/products');
}
public function lock(){
if(isset($_GET['id'])){
$id=$this->input->get('id');
$this->product_model->update(array('activated'=>0),array('id'=>$id));
}
redirect('admin/products');
}
public function search(){
if(isset($_GET['query'])){
$query=$this->input->get('query');
$data=parent::getDataView();
$page = $this->input->get('page') ? $this->input->get('page') : 0;
$per_page = $this->input->get('per_page') ? $this->input->get('per_page') : 10;
$order = $this->input->get('order') ? $this->input->get('order') : 'DESC';
$config['total_rows'] = $this->product_model->total(array(), array('title'=>$query));
$config['base_url']= base_url() . 'index.php/admin/products/search?order='.$order.'&query='.$query;
$config['per_page']=$per_page;
$data['msg_label']=$this->config->item('msg_label');
$this->pagination->initialize($config);
$data['list'] = $this->product_model->get_by_name($query,$page,$per_page);
$data['page_link'] = $this->pagination->create_links();
$data['search_title']='Result search for "'.$query.'"';
$this->template->write_view('content','backends/products/index',array('data'=>$data));
$this->template->render();
}
}
}
?>
答案 0 :(得分：1)
允许您的HTML文件输入选择许多文件，如<input type="file" name="images[]" multiple>，然后循环遍历相同的$ _FILES var。另外，请勿忘记添加<form> enctype属性，例如enctype="multipart/form-data"。
$image_files = $_FILES['images']['tmp_name'];
foreach($image_files as $key=>$value){
// write some code to process the information
// this will loop through all the images, no matter how many, so the same code inside these curly braces will be applied to each file/image/whatever.
}