我想通过codeigniter进行多上传图像并使用以下库，我的问题是在选择几个（多个）图像之后它在输出（php）中只给出了一个图像，例如：
如果我选择多图像为：
image1.gif | image2.gif | image3.gif
只是上传：
image3.gif
与此同时，我使用控制功能foreach上传图片，这没问题。
<input type="file" name="userfile[]" >
<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Multi_upload
{
function Multi_upload()
{
// $CI =& get_instance();
}
function go_upload($field = 'userfile')
{
$CI =& get_instance();
// Is $_FILES[$field] set? If not, no reason to continue.
if (!isset($_FILES[$field]['name'][0])) {
$CI->upload->set_error('upload_no_file_selected');
return FALSE;
} else {
$num_files = count($_FILES[$field]['name']) - 1;
$file_list = array();
$error_hold = array();
$error_upload = FALSE;
}
// Is the upload path valid?
if (!$CI->upload->validate_upload_path()) {
// errors will already be set by validate_upload_path() so just return FALSE
return FALSE;
}
for ($i = 0; $i < $num_files; $i++) {
// $fname = $_FILES[$field]['name'][$i];
// echo "$fname\n\n<br><br>\n\n";
$error_hold[$i] = FALSE;
// Was the file able to be uploaded? If not, determine the reason why.
if (!is_uploaded_file($_FILES[$field]['tmp_name'][$i])) {
$error = (!isset($_FILES[$field]['error'][$i])) ? 4 : $_FILES[$field]['error'][$i];
switch ($error) {
case 1: // UPLOAD_ERR_INI_SIZE
$error_hold[$i] = 'upload_file_exceeds_limit';
break;
case 2: // UPLOAD_ERR_FORM_SIZE
$error_hold[$i] = 'upload_file_exceeds_form_limit';
break;
case 3: // UPLOAD_ERR_PARTIAL
$error_hold[$i] = 'upload_file_partial';
break;
case 4: // UPLOAD_ERR_NO_FILE
$error_hold[$i] = 'upload_no_file_selected';
break;
case 6: // UPLOAD_ERR_NO_TMP_DIR
$error_hold[$i] = 'upload_no_temp_directory';
break;
case 7: // UPLOAD_ERR_CANT_WRITE
$error_hold[$i] = 'upload_unable_to_write_file';
break;
case 8: // UPLOAD_ERR_EXTENSION
$error_hold[$i] = 'upload_stopped_by_extension';
break;
default:
$error_hold[$i] = 'upload_no_file_selected';
break;
}
return FALSE;
}
// Set the uploaded data as class variables
$CI->upload->file_temp = $_FILES[$field]['tmp_name'][$i];
$CI->upload->file_name = $CI->upload->file_name = $_FILES[$field]['name'][$i];
$CI->upload->file_size = $_FILES[$field]['size'][$i];
$CI->upload->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES[$field]['type'][$i]);
$CI->upload->file_type = strtolower($CI->upload->file_type);
$CI->upload->file_ext = $CI->upload->get_extension($_FILES[$field]['name'][$i]);
// Convert the file size to kilobytes
if ($CI->upload->file_size > 0) {
$CI->upload->file_size = round($CI->upload->file_size / 1024, 2);
}
// Is the file type allowed to be uploaded?
if (!$CI->upload->is_allowed_filetype()) {
$error_hold[$i] = 'upload_invalid_filetype';
}
// Is the file size within the allowed maximum?
if (!$CI->upload->is_allowed_filesize()) {
$error_hold[$i] = 'upload_invalid_filesize';
}
// Are the image dimensions within the allowed size?
// Note: This can fail if the server has an open_basdir restriction.
if (!$CI->upload->is_allowed_dimensions()) {
$error_hold[$i] = 'upload_invalid_dimensions';
}
// Sanitize the file name for security
$CI->upload->file_name = $CI->upload->clean_file_name($CI->upload->file_name);
// Remove white spaces in the name
if ($CI->upload->remove_spaces == TRUE) {
$CI->upload->file_name = preg_replace("/\s+/", "_", $CI->upload->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.
*/
$CI->upload->orig_name = $CI->upload->file_name;
if ($CI->upload->overwrite == FALSE) {
$CI->upload->file_name = $CI->upload->set_filename($CI->upload->upload_path, $CI->upload->file_name);
if ($CI->upload->file_name === FALSE) {
$error_hold[$i] = TRUE;
}
}
/*
* 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($CI->upload->file_temp, $CI->upload->upload_path . $CI->upload->file_name)) {
if (!@move_uploaded_file($CI->upload->file_temp, $CI->upload->upload_path . $CI->upload->file_name)) {
$error_hold[$i] = 'upload_destination_error';
}
}
/*
* 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 ($CI->upload->xss_clean == TRUE) {
$CI->upload->do_xss_clean();
}
if ($error_hold[$i]) {
$error_upload = TRUE;
// echo $error_hold[$i];
} else {
if ($imageVar = $this->multiple_image_properties($CI->upload->upload_path . $CI->upload->file_name)) {
$file_list[] = array(
'name' => $CI->upload->file_name,
'file' => $CI->upload->upload_path . $CI->upload->file_name,
'size' => $CI->upload->file_size,
'ext' => $CI->upload->file_ext,
'image_type' => $imageVar->image_type,
'height' => $imageVar->height,
'width' => $imageVar->width
);
} else {
$file_list[] = array(
'name' => $CI->upload->file_name,
'file' => $CI->upload->upload_path . $CI->upload->file_name,
'size' => $CI->upload->file_size,
'type' => $CI->upload->file_type,
'ext' => $CI->upload->file_ext
);
}
}
// For debugging
//if (strlen($error_hold[$i]) > 1) {
//print_r($error_hold);
//}
} // end for loop
// Add error display for individual files
if ($error_upload) {
$this->set_error($error_hold);
return FALSE;
} else {
return $file_list;
}
}
// --------------------------------------------------------------------
/**
* Set Image Properties
*
* Uses GD to determine the width/height/type of image
*
* @access public
* @param string
* @return void
*/
function multiple_image_properties($path = '')
{
$CI =& get_instance();
if (!$CI->upload->is_image()) {
return false;
}
if (function_exists('getimagesize')) {
if (FALSE !== ($D = @getimagesize($path))) {
$types = array(
1 => 'gif',
2 => 'jpeg',
3 => 'png'
);
$image->width = $D['0'];
$image->height = $D['1'];
$image->image_type = (!isset($types[$D['2']])) ? 'unknown' : $types[$D['2']];
return $image;
}
}
}
// --------------------------------------------------------------------
/**
* Set an error message
*
* @access public
* @param string
* @return void
*/
function set_error($msg)
{
$CI =& get_instance();
$CI->lang->load('upload');
if (is_array($msg)) {
foreach ($msg as $val) {
$msg = ($CI->lang->line($val) == FALSE) ? $val : $CI->lang->line($val);
$this->error_msg[] = $msg;
log_message('error', $msg);
}
} else {
$msg = ($CI->lang->line($msg) == FALSE) ? $msg : $CI->lang->line($msg);
$this->error_msg[] = $msg;
log_message('error', $msg);
}
}
// --------------------------------------------------------------------
}
?>
我们如何解决这个问题？
答案 0 :(得分：0)
请看下面的代码，我想你想要这个。
每次要上传新文件时，您需要将每个文件的配置初始化为 $ this-＆gt; upload-＆gt; initialize（$ config）;
// Has the form been posted?
if (isset($_POST['submit']))
{
// Load the library - no config specified here
$this->load->library('upload');
// Check if there was a file uploaded - there are other ways to
// check this such as checking the 'error' for the file - if error
// is 0, you are good to code
if (!empty($_FILES['userfile']['name']))
{
// Specify configuration for File 1
$config['upload_path'] = 'uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '100';
$config['max_width'] = '1024';
$config['max_height'] = '768';
// Initialize config for File 1
$this->upload->initialize($config);
// Upload file 1
if ($this->upload->do_upload('userfile'))
{
$data = $this->upload->data();
}
else
{
echo $this->upload->display_errors();
}
}
// Do we have a second file?
if (!empty($_FILES['userfile1']['name']))
{
// Config for File 2 - can be completely different to file 1's config
// or if you want to stick with config for file 1, do nothing!
$config['upload_path'] = 'uploads/dir2/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '100';
$config['max_width'] = '1024';
$config['max_height'] = '768';
// Initialize the new config
$this->upload->initialize($config);
// Upload the second file
if ($this->upload->do_upload('userfile1'))
{
$data = $this->upload->data();
}
else
{
echo $this->upload->display_errors();
}
}
}
else
{
$this->load->view("upload_form");
}
答案 1 :(得分：0)
您还应该尝试使用这个神奇的库来实现多上传功能。惊人的界面和快速的性能。
答案 2 :(得分：0)
不需要任何额外库的简洁方法将this piece of code与multiple=""属性一起使用。
不要低估通过UI一次选择多个文件的舒适度。