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CodeIgniter class library example of image uploading

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Release: 2016-07-25 08:53:23
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  • 复制代码

    2,文件上传类:

    1. public function img_upload()

    2. {
    3. $this->load->helper('url');

    4. $config['upload_path'] = './images/'.date('Ym', time()).'/';

    5. $config['allowed_types'] = 'gif|jpg|png';
    6. $config['file_name'] = date('Y_m_d', time()).'_'.sprintf('%02d', rand(0,99));
    7. $config['max_size'] = '500';
    8. $config['max_width'] = '1024';
    9. $config['max_height'] = '768';

    10. $this->load->library('upload', $config);

    11. if ( !$this->upload->do_upload())

    12. {
    13. $error = array('error' => $this->upload->display_errors());
    14. }
    15. else
    16. {
    17. $data = array('upload_data' => $this->upload->data());
    18. }
    19. }

    复制代码

    需要用到的函数: $this->upload->do_upload():根据偏好配置参数执行操作。注意:默认情况下上传的文件来自于提交表单里名为userfile的文件域,并且该表单必须是 "multipart"类型。 $this->upload->display_errors():如果do_upload()返回失败,显示错误信息。此函数不会自动输出,而是返回数据,所以你可以按你的要求安排。 $this->upload->data():辅助函数,它返回上传文件的所有相关信息的数组。



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