多个图像在Codeigniter中一次调整大小，将不工作 [英] Multiple Image Resizes at once in Codeigniter , won't work

问题描述

我尝试在同一功能中上传图片并在不同尺寸重新调整大小。但是会发生什么，只有一个重新调整大小工作，其他的不。我的代码是：

  function do_upload（）
 {
 $ this_user = $ this-> auth - > info; if（！is_dir（'./ uploads /'.$ this_user-> username））{
 mkdir（'./ uploads /'.$ this_user-> username）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos'）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos / master'）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos / small'）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos / medium'）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos / large'）; 
 mkdir（'./ uploads /'.$ this_user-> username。'/ photos / xlarge'）; 
} 
 $ config ['upload_path'] ='./uploads/'.$this_user->username.'/photos/master/'; 
 $ config ['allowed_types'] ='gif | jpg'; 
 
 $ title = $ this-> input-> post（'title'）; 
 $ this-> load-> library（'upload'，$ config）; 
 if（！$ this-> upload-> do_upload（））
 {
 echo'< div id =status> error< / div>'; 
 echo'< div id =message>'。 $ this-> upload-> display_errors（）。'< / div>'; 
} 
 else 
 {
 $ data = array（'upload_data'=> $ this-> upload-> data（））; 
 //调整大小开始
 $ image_width = $ data ['upload_data'] ['image_width']; 
 $ image_height = $ data ['upload_data'] ['image_height']; 
 $ full_path = $ data ['upload_data'] ['full_path']; 
 //检查宽度
 if（$ image_width> 5000）{
 $ config ['image_library'] ='gd2'; 
 $ config ['source_image'] = $ full_path; 
 // $ config ['create_thumb'] = TRUE; 
 $ config ['maintain_ratio'] = TRUE; 
 $ config ['width'] = 5000; 
 // $ config ['height'] = 50; 
 $ config ['new_image'] ='./uploads/'.$this_user->username.'/photos/xlarge'; 
 $ this-> load-> library（'image_lib'，$ config）; 
 $ this-> image_lib-> resize（）; 
} 
 if（$ image_width> = 4500）{
 $ config ['image_library'] ='gd2'; 
 $ config ['source_image'] = $ full_path; 
 // $ config ['create_thumb'] = TRUE; 
 $ config ['maintain_ratio'] = TRUE; 
 $ config ['width'] = 4500; 
 // $ config ['height'] = 50; 
 $ config ['new_image'] ='./uploads/'.$this_user->username.'/photos/large'; 
 $ this-> load-> library（'image_lib'，$ config）; 
 $ this-> image_lib-> resize（）; 
} 
 if（$ image_width> = 2000）{
 $ config ['image_library'] ='gd2'; 
 $ config ['source_image'] = $ full_path; 
 // $ config ['create_thumb'] = TRUE; 
 $ config ['maintain_ratio'] = TRUE; 
 $ config ['width'] = 2000; 
 // $ config ['height'] = 50; 
 $ config ['new_image'] ='./uploads/'.$this_user->username.'/photos/medium'; 
 $ this-> load-> library（'image_lib'，$ config）; 
 $ this-> image_lib-> resize（）; 
} 
 if（$ image_width> = 800）{
 $ config ['image_library'] ='gd2'; 
 $ config ['source_image'] = $ full_path; 
 // $ config ['create_thumb'] = TRUE; 
 $ config ['maintain_ratio'] = TRUE; 
 $ config ['width'] = 800; 
 // $ config ['height'] = 50; 
 $ config ['new_image'] ='./uploads/'.$this_user->username.'/photos/small'; 
 $ this-> load-> library（'image_lib'，$ config）; 
 $ this-> image_lib-> resize（）; 
} 
 // resizing ends 
 echo'< div id =status> success< / div>'; 
 //然后输出您的消息（可选）
 echo'< div id =message>'。 $ data ['upload_data'] ['file_name']。$ this-> input-> post（'type'）。已成功上传。< / div> 
 //将数据传递给js 
 echo'< div id =upload_data>'。 json_encode（$ data）。 '< / div>'; 
 
} 
} 
  

解决方案

您需要确保调用 $ this-> image_lib-> clear （）; ，因为它重置了图像处理类的初始化。请参阅： http://codeigniter.com/user_guide/libraries/image_lib.html p>

I am trying to upload images and re-size them in different dimensions within the same function. but what happens is that only one re-size works and the others don't . My code is:

    function do_upload()
{
    $this_user = $this->auth->info;if(!is_dir('./uploads/'.$this_user->username)){
        mkdir('./uploads/'.$this_user->username);
        mkdir('./uploads/'.$this_user->username.'/photos');
        mkdir('./uploads/'.$this_user->username.'/photos/master');
        mkdir('./uploads/'.$this_user->username.'/photos/small');
        mkdir('./uploads/'.$this_user->username.'/photos/medium');
        mkdir('./uploads/'.$this_user->username.'/photos/large');
        mkdir('./uploads/'.$this_user->username.'/photos/xlarge');
    }
    $config['upload_path'] = './uploads/'.$this_user->username.'/photos/master/';
    $config['allowed_types'] = 'gif|jpg';

    $title = $this->input->post('title');
    $this->load->library('upload', $config);
    if ( ! $this->upload->do_upload())
    {
        echo '<div id="status">error</div>';
        echo '<div id="message">'. $this->upload->display_errors() .'</div>';
    }
    else
    {
        $data = array('upload_data' => $this->upload->data());
        //resizing begins
            $image_width = $data['upload_data']['image_width'];
            $image_height = $data['upload_data']['image_height'];
            $full_path = $data['upload_data']['full_path'];
            //checking for width
            if($image_width>5000){
                $config['image_library'] = 'gd2';
                $config['source_image'] = $full_path;
                //$config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 5000;
                //$config['height'] = 50;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/xlarge';
                $this->load->library('image_lib', $config);
                $this->image_lib->resize();
            }
            if($image_width>=4500){
                $config['image_library'] = 'gd2';
                $config['source_image'] = $full_path;
                //$config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 4500;
                //$config['height'] = 50;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/large';
                $this->load->library('image_lib', $config);
                $this->image_lib->resize();
            }
            if($image_width>=2000){
                $config['image_library'] = 'gd2';
                $config['source_image'] = $full_path;
                //$config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 2000;
                //$config['height'] = 50;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/medium';
                $this->load->library('image_lib', $config);
                $this->image_lib->resize();
            }
            if($image_width>=800){
                $config['image_library'] = 'gd2';
                $config['source_image'] = $full_path;
                //$config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 800;
                //$config['height'] = 50;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/small';
                $this->load->library('image_lib', $config);
                $this->image_lib->resize();
            }
        //resizing ends
        echo '<div id="status">success</div>';
        //then output your message (optional)
        echo '<div id="message">'. $data['upload_data']['file_name'].$this->input->post('type').' Successfully uploaded.</div>';
        //pass the data to js
        echo '<div id="upload_data">'. json_encode($data) . '</div>';

    }
}

What Am I doing wrong here?

解决方案

You will need to make sure that you call $this->image_lib->clear(); as it resets the initialization of the image manipulation class. See: http://codeigniter.com/user_guide/libraries/image_lib.html

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