CodeIgniter Image缩略图问题

Question

我想用两个函数创建两个不同大小的缩略图.uploadImage()生成大缩略图而uploadIhumb($ name){它在第一个函数内调用}创建小缩略图.第一个功能创建缩略图但第二个不起作用.请解决问题,并突出问题发生的地方？

enter code here:
function uploadImage()
        {
                                    $imageName2=$_FILES['file']['tmp_name'];


                $config['image_library'] = 'gd2';
                //$config['source_image']   = $imageName2;// this is temporary folder where image place on uploading time
                $config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = false;
                $config['width']     = 696;
                $config['height']   = 241;
                $config['new_image'] = 'images/uploads';
                $this->load->library('image_lib', $config); 
                $this->image_lib->resize();
                $file_name= basename( $imageName2, ".tmp");
                $filename=$file_name.'_thumb.tmp'; 


        ////////////////////Rename code///////////////////////////
                $name= $this->rand_string( 6 );

                $dir=$_SERVER['DOCUMENT_ROOT'].'/images/uploads/';

                rename($dir . $filename, $dir . $name);
                echo $name;
                $this->uploadIhumb($name); //FUNCTION CALL
}

function uploadIhumb($name)
    {

                $config['image_library'] = 'gd2';
                $config['source_image'] = $_SERVER['DOCUMENT_ROOT'].'/images/uploads/'.$name;
                $config['create_thumb'] = TRUE;

                $config['width']     = 80;
                $config['height']   = 80;
                $config['new_image'] = $_SERVER['DOCUMENT_ROOT'].'images/uploads/thumbs/';
                $this->load->library('image_lib', $config); 
                $this->image_lib->resize();


}

Answer 1

不需要任何其他库:-(问题可以解决,如果我们只加载图像库一次,在函数的开始.并且只初始化配置为第二拇指.成功的代码如下运输: -

{function createThumb1($ imageName)//文件名传递{

        // this thumbnail created
    $config['image_library'] = 'gd2';
    $config['source_image'] = $_SERVER['DOCUMENT_ROOT'].'/uploads/'.$imageName;

    $config['create_thumb'] = TRUE;
    $config['maintain_ratio'] = false;
    $config['width']     = 80;
    $config['height']   = 80;
    $config['new_image'] = $_SERVER['DOCUMENT_ROOT'].'/images/uploads/thumbs/'.$imageName;
    $this->load->library('image_lib', $config);
    if ( ! $this->image_lib->resize()){echo $this->image_lib->display_errors();}

    $this->image_lib->clear();

    // unable to create this this thumbnail
    $config['image_library'] = 'gd2';
    $config['source_image'] = $_SERVER['DOCUMENT_ROOT'].'/uploads/'.$imageName;
    $config['create_thumb'] = FALSE;
    $config['maintain_ratio'] = false;
    $config['width']     = 696;
    $config['height']   = 241;
    $config['new_image'] =  $_SERVER['DOCUMENT_ROOT'].'/images/uploads/'.$imageName;
    //$this->load->library('image_lib', $config);  // this line cause problem
    $this->image_lib->initialize($config); // with this problem resolved
    if ( ! $this->image_lib->resize()){echo $this->image_lib->display_errors();}


    $this->image_lib->clear();






    $this->load->view('admin/upload_form',array('error' => ' ' ));





}

}