我想在Codeigniter中调整上传图片的大小，但无法正常工作 [英] I want to resize uploaded image in codeigniter but it is not working

问题描述

我想在codeigniter中调整上传图像的大小，但是此代码不起作用。图片上传成功，但我想将其尺寸调整为110x110并显示它！

I want to resize uploaded image in codeigniter but it is not working with this code. Image uploading successfully but I want to resize it to 110x110 and display it !

我的代码在这里

class Upload_photo extends CI_Controller{
function __construct()
{
parent::__construct();
$this->load->helper(array('form', 'url'));           
}
public function index(){    
session_start();
$u = $_SESSION['username'];
$config['upload_path'] = 'user/'.$u.'/'.$filename; 
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '30000';
$config['max_width']  = '1024';
$config['max_height']  = '768';              
$this->load->library('upload',$config);   
if(!$this->upload->do_upload('file1'))
{
echo "Error". $this->upload->display_errors();

}
else {

$config['image_library'] = 'GD2';
$config['source_image'] = $config['upload_path'];
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 110;
$config['height'] = 110;

$this->load->library('image_lib', $config);

$this->image_lib->resize();
echo 'Photo Uploaded Successfully';
}      
}   
}

推荐答案

如果您要两个图像1>上层图像2>缩略图图像，并且要将缩略图图像存储到其他文件夹，则应使用$ config ['new_image']，并且路径不应是您的url，而应是绝对服务器路径。如果您不知道如何获取绝对服务器路径？您可以在下面看到我的代码。

If you want both images 1>uploded image 2>Thumbnail Image and want to store Thumbnail image to different folder you should use $config['new_image'] and path should not your url but should be absolute server path. If you don't know how to get absolute server path ? you can see my code below.

我找到了解决方案，我的代码在这里

I got the solution, my code is here

class Upload_photo extends CI_Controller{
function __construct()
{
parent::__construct();
$this->load->helper(array('form', 'url')); 
}
public function index(){
session_start();
$u = $_SESSION['username'];      
$config['upload_path'] = 'user/'.$u;         
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '30000';
$config['max_width']  = '1024';
$config['max_height']  = '768';              

$this->load->library('upload',$config);  
$filename = $_FILES['file1']['name'];
//echo $filename;     
//echo $source;
if(!$this->upload->do_upload('file1'))
{
echo "Error". $this->upload->display_errors();
return;           
}                        
$config = array();
$config['image_library'] = 'gd2';
$config['source_image']  = 'user/'.$u.'/'.$filename ;                
$config['new_image']= FCPATH . 'user/'.$u.'/Thumb/';
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = FALSE;
$config['width'] = 110;
$config['height'] = 110;                             
$this->load->library('image_lib',$config);                   
if(!$this->image_lib->resize())
{
echo $this->image_lib->display_errors();                           
}                 
}
}

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