我无法在 codeigniter 中调整图像大小答案

【问题标题】：I am unable to resize my image in codeigniter我无法在 codeigniter 中调整图像大小
【发布时间】：2017-07-19 10:17:17
【问题描述】：

    $config['upload_path'] = './uploads/';
    $config['allowed_types'] = 'jpg|jpeg|png|gif';
    $config['maintain_ratio'] = TRUE;
    $config['width'] = 100;
    $config['height'] = 150;
    $config['file_name'] = $_FILES['image']['name'];
    $this->load->library('image_lib', $config);
    $this->image_lib->resize();
    $this->image_lib->initialize($config); 
    $this->load->library('upload',$config);
    $this->upload->initialize($config);

我无法调整图像大小...请告诉我我的错误

【问题讨论】：

先初始化再调整大小
stackoverflow.com/questions/19218247/codeigniter-image-resize 和 stackoverflow.com/questions/16949983/…

标签： php codeigniter

【解决方案1】：

根据@jigar Shah 的评论，您必须先初始化上传库，然后再调整大小

            $this->load->library('upload');
            $config['upload_path'] = './uploads';
            $config['allowed_types'] ='csv|xls|xlsx';
            $config['max_size'] = 1024;  //in KB
            $config['overwrite'] = TRUE;
            $config['encrypt_name'] = TRUE;
            $config['max_filename'] = 25;
            $this->upload->initialize($config);
        if (!$this->upload->do_upload('image_name')) {
                //if file upload failed then catch the errors
                $this->handle_error($this->upload->display_errors());
                $is_file_error = TRUE;
            } else {
                 //store the file info
                $image_data = $this->upload->data();
                $config['image_library'] = 'gd2';
                $config['source_image'] = $image_data['full_path']; //get original image
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 150;
                $config['height'] = 100;
                $this->load->library('image_lib', $config);
                if (!$this->image_lib->resize()) {
                    $this->handle_error($this->image_lib->display_errors());
                }
            }

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【讨论】：