从下面的代码中，我尝试上传 4 张图片，但我只能将最后一张图片上传到我的upload文件夹。
我的图像验证和所有其他任务都运行良好。但只有我有多个图像上传到其区别文件夹的问题。
请检查我的以下代码并帮助解决我的问题。
MyController.php
class Booksetups extends CI_Controller {
public function __construct()
{
parent:: __construct();
$this->load->helper('url');
$this->load->helper('form');
$this->load->library('session');
$this->load->model('Booksmodel');
$this->load->library('form_validation');
$this->load->library('pagination');
}
public function valid_upload()
{
$this->load->library('upload');
$config['upload_path'] = 'uploads/';
$config['allowed_types'] = 'gif|jpg|jpeg|png';
$config['max_size'] = 2048;
$config['max_width'] = 385;
$config['max_height'] = 410;
$this->upload->initialize($config);
if (!$this->upload->validate_upload('img1') || !$this->upload->validate_upload('img2') || !$this->upload->validate_upload('img3') || !$this->upload->validate_upload('img4') ) {
$this->form_validation->set_message('valid_upload', $this->upload->display_errors());
return FALSE;
} else {
return TRUE;
}
}
function book($book_id = 0)
{
$config = array();
$config['base_url'] = 'http://localhost/thebestbookfinder.com/Booksetups/book/pgn/';
$config["total_rows"] = $this->Booksmodel->record_count();
$config['uri_segment'] = 4;
$config['per_page'] = 17;
$config['full_tag_open'] = '<div id="pagination">';
$config['full_tag_close'] = '</div>';
$this->pagination->initialize($config);
$page = ($this->uri->segment(4)) ? $this->uri->segment(4) : 0;
$this->form_validation->set_error_delimiters('<div class="error">', '</div>')->set_rules('book_title', '"Title"','trim|required|min_length[4]|max_length[150]|xss_clean');
$this->form_validation->set_error_delimiters('<div class="error">', '</div>')->set_rules('edition_id', '"Edition Name"','trim|min_length[1]|max_length[150]|xss_clean');
//---------------------validating images---------------------------
$this->form_validation->set_rules('img1', 'Image 1', 'trim|xss_clean|callback_valid_upload');
$this->form_validation->set_rules('img2', 'Image 2', 'trim|xss_clean|callback_valid_upload');
$this->form_validation->set_rules('img3', 'Image 3', 'trim|xss_clean|callback_valid_upload');
$this->form_validation->set_rules('img4', 'Image 4', 'trim|xss_clean|callback_valid_upload');
//-----------Here i am uploading my images into my specified folder-------------------------------
if ($this->form_validation->run() === TRUE) {
$this->upload->do_upload('img1');
$this->upload->do_upload('img2');
$this->upload->do_upload('img3');
$this->upload->do_upload('img4');
$this->Booksmodel->entry_insert();
$this->session->set_flashdata('msg', '1 row(s) inserted.');
redirect(current_url());
}
................
................
My_Upload.php
Class My_Upload extends CI_Upload
{
public function __construct(){
parent::__construct();
}
public function validate_upload($field = 'img1')
{
// Is $_FILES[$field] set? If not, no reason to continue.
if (! isset($_FILES[$field])) {
$this->set_error('upload_no_file_selected');
return FALSE;
}
// Is the upload path valid?
if (! $this->validate_upload_path()) {
// errors will already be set by validate_upload_path() so just return FALSE
return FALSE;
}
// Was the file able to be uploaded? If not, determine the reason why.
if (! is_uploaded_file($_FILES[$field]['tmp_name'])) {
$error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];
switch ($error) {
case 1:
// UPLOAD_ERR_INI_SIZE
$this->set_error('upload_file_exceeds_limit');
break;
case 2:
// UPLOAD_ERR_FORM_SIZE
$this->set_error('upload_file_exceeds_form_limit');
break;
case 3:
// UPLOAD_ERR_PARTIAL
$this->set_error('upload_file_partial');
break;
case 4:
// UPLOAD_ERR_NO_FILE
$this->set_error('upload_no_file_selected');
break;
case 6:
// UPLOAD_ERR_NO_TMP_DIR
$this->set_error('upload_no_temp_directory');
break;
case 7:
// UPLOAD_ERR_CANT_WRITE
$this->set_error('upload_unable_to_write_file');
break;
case 8:
// UPLOAD_ERR_EXTENSION
$this->set_error('upload_stopped_by_extension');
break;
default : $this->set_error('upload_no_file_selected');
break;
}
return FALSE;
}
// Set the uploaded data as class variables
$this->file_temp = $_FILES[$field]['tmp_name'];
$this->file_size = $_FILES[$field]['size'];
$this->_file_mime_type($_FILES[$field]);
$this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $this->file_type);
$this->file_type = strtolower(trim(stripslashes($this->file_type), '"'));
$this->file_name = $this->_prep_filename($_FILES[$field]['name']);
$this->file_ext = $this->get_extension($this->file_name);
$this->client_name = $this->file_name;
// Is the file type allowed to be uploaded?
if (! $this->is_allowed_filetype()) {
$this->set_error('upload_invalid_filetype');
return FALSE;
}
// if we're overriding, let's now make sure the new name and type is allowed
if ($this->_file_name_override != '') {
$this->file_name = $this->_prep_filename($this->_file_name_override);
// If no extension was provided in the file_name config item, use the uploaded one
if (strpos($this->_file_name_override, '.') === FALSE) {
$this->file_name .= $this->file_ext;
}
// An extension was provided, lets have it!
else
{
$this->file_ext = $this->get_extension($this->_file_name_override);
}
if (! $this->is_allowed_filetype(TRUE)) {
$this->set_error('upload_invalid_filetype');
return FALSE;
}
}
// Convert the file size to kilobytes
if ($this->file_size > 0) {
$this->file_size = round($this->file_size/1024, 2);
}
// Is the file size within the allowed maximum?
if (! $this->is_allowed_filesize()) {
$this->set_error('upload_invalid_filesize');
return FALSE;
}
// Are the image dimensions within the allowed size?
// Note: This can fail if the server has an open_basdir restriction.
if (! $this->is_allowed_dimensions()) {
$this->set_error('upload_invalid_dimensions');
return FALSE;
}
// Sanitize the file name for security
$this->file_name = $this->clean_file_name($this->file_name);
// Truncate the file name if it's too long
if ($this->max_filename > 0) {
$this->file_name = $this->limit_filename_length($this->file_name, $this->max_filename);
}
// Remove white spaces in the name
if ($this->remove_spaces == TRUE) {
$this->file_name = preg_replace("/\s+/", "_", $this->file_name);
}
/*
* Validate the file name
* This function appends an number onto the end of
* the file if one with the same name already exists.
* If it returns false there was a problem.
*/
$this->orig_name = $this->file_name;
if ($this->overwrite == FALSE) {
$this->file_name = $this->set_filename($this->upload_path, $this->file_name);
if ($this->file_name === FALSE) {
return FALSE;
}
}
/*
* Run the file through the XSS hacking filter
* This helps prevent malicious code from being
* embedded within a file. Scripts can easily
* be disguised as images or other file types.
*/
if ($this->xss_clean) {
if ($this->do_xss_clean() === FALSE) {
$this->set_error('upload_unable_to_write_file');
return FALSE;
}
}
$this->set_image_properties($this->upload_path.$this->file_name);
return TRUE;
}
public function do_upload($field = 'img1')
{
/*
* Move the file to the final destination
* To deal with different server configurations
* we'll attempt to use copy() first. If that fails
* we'll use move_uploaded_file(). One of the two should
* reliably work in most environments
*/
if (! @copy($this->file_temp, $this->upload_path.$this->file_name)) {
if (! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name)) {
$this->set_error('upload_destination_error');
return FALSE;
}
}
/*
* Set the finalized image dimensions
* This sets the image width/height (assuming the
* file was an image). We use this information
* in the "data" function.
*/
return TRUE;
}
}
MyViewForm.php
<?php echo form_open_multipart('Booksetups/book');?>
<?php echo form_hidden('book_id',$fbook_id['value']);?>
<input type="file" name="img1" />
<input type="file" name="img2" />
<input type="file" name="img3" />
<input type="file" name="img4" />
<?php
echo form_submit($submitbtn);
echo form_reset($resetbtn);
?>
<?php echo form_close();?>