Php Codeigniter中的多个图像同时调整大小，赢得'；行不通

我正在尝试上传图像，并在同一功能中以不同的维度重新调整它们的大小。但实际情况是，只有一个重新调整了大小，而其他的没有。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());
        //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>';

    }
}

函数do_upload（）
{
$this_user=$this->auth->info；如果（！is_dir（'./uploads/'.$this_user->username））{
mkdir（'./上传/'.$this\u用户->用户名）；
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）；
如果（！$this->upload->do_upload（））
{
回声“错误”；
回显“”。$this->upload->display_errors（）；
}
其他的
{
$data=array（'upload_data'=>$this->upload->data（））；
//开始调整大小
$image_width=$data['upload_data']['image_width']；
$image_height=$data['upload_data']['image_height']；
$full_path=$data['upload_data']['full_path']；
//检查宽度
如果（$image_width>5000）{
$config['image_library']='gd2'；
$config['source\u image']=$full\u 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）；
$this->image_lib->resize（）；
}
如果（$image\u width>=4500）{
$config['image_library']='gd2'；
$config['source\u image']=$full\u 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）；
$this->image_lib->resize（）；
}
如果（$image\u width>=2000）{
$config['image_library']='gd2'；
$config['source\u image']=$full\u 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）；
$this->image_lib->resize（）；
}
如果（$image\u width>=800）{
$config['image_library']='gd2'；
$config['source\u image']=$full\u 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）；
$this->image_lib->resize（）；
}
//调整末端尺寸
呼应"成功",；
//然后输出消息（可选）
echo'.$data['upload_data']['file_name'.$this->input->post（'type'）.“已成功上载”；
//将数据传递给js
回显“”。json_编码（$data）。“”；
}
}

---

我做错了什么？

您需要确保调用

$this->image_lib->clear（）重置图像处理类的初始化。请看：
这实际上对我很有效。我所做的是多次加载库。我应该加载库一次，并为每次重新调整大小初始化配置。这是为我工作的代码

    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
            $this->load->library('image_lib');
            if($image_width>5000){
                $config['source_image'] = $full_path;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 5000;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/xlarge';
                $this->image_lib->initialize($config);
                $this->image_lib->resize();
                $this->image_lib->clear();
                $aa = 'xlarge ';
            }
            if($image_width>=4500){
                $config['source_image'] = $full_path;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 4500;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/large';
                $this->image_lib->initialize($config);
                $this->image_lib->resize();
                $this->image_lib->clear();
                $aa .= 'large';
            }
            if($image_width>=2000){
                $config['source_image'] = $full_path;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 2000;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/medium';
                $this->image_lib->initialize($config);
                $this->image_lib->resize();
                $this->image_lib->clear();
                $aa .= 'medium';
            }
            if($image_width>=800){
                $config['source_image'] = $full_path;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 800;
                $config['new_image'] = './uploads/'.$this_user->username.'/photos/small';
                $this->image_lib->initialize($config);
                $this->image_lib->resize();
                $this->image_lib->clear();
                $aa .= 'small';
            }
        //resizing ends
        echo '<div id="status">success</div>';
        //then output your message (optional)
        echo '<div id="message">'. $data['upload_data']['file_name'].$aa.' Successfully uploaded.</div>';
        //pass the data to js
        echo '<div id="upload_data">'. json_encode($data) . '</div>';

    }
}

函数do_upload（）
{
$this_user=$this->auth->info；
如果（！is_dir（'./上传/'.$this_user->username））{
mkdir（'./上传/'.$this\u用户->用户名）；
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）；
如果（！$this->upload->do_upload（））
{
回声“错误”；
回显“”。$this->upload->display_errors（）；
}
其他的
{
$data=array（'upload_data'=>$this->upload->data（））；
//开始调整大小
$image_width=$data['upload_data']['image_width']；
$image_height=$data['upload_data']['image_height']；
$full_path=$data['upload_data']['full_path']；
//检查宽度
$this->load->lib（'image_lib'）；
如果（$image_width>5000）{
$config['source\u image']=$full\u path；
$config['maintain_ratio']=TRUE；
$config['width']=5000；
$config['new_image']='./uploads/'.$this_user->username./photos/xlarge'；
$this->image\u lib->initialize（$config）；
$this->image_lib->resize（）；
$this->image_lib->clear（）；