Question

我在codeigniter中使用rest api 在config / form-validation.php文件中，有所有验证信息，这是我的代码

$config = array(
    'usersignup' => array(
        array('field' => 'first_name', 'label' => 'First Name', 'rules' => 'trim|required'),
        array('field' => 'last_name', 'label' => 'Last Name', 'rules' => 'trim|required'),
        array('field' => 'username', 'label' => 'Username', 'rules' => 'trim|required'),
        array('field' => 'password', 'label' => 'Password', 'rules' => 'trim|required'),
        array('field' => 'user_type', 'label' => 'User Type', 'rules' => 'trim|required'),      
        ),  
    )

我如何验证图像？

Answer 1

实际上，这取决于您在上传图像时实际要验证的内容。如果只想检查是否选择了图像，可以通过这种方式进行

if(isset($_FILES["fileToUpload"])) {
    // Image is selected 
}

如果您还想检查mime类型，请执行此操作，

if(isset($_FILES["fileToUpload"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";

    } else {
        echo "File is not an image.";

    }
}

Answer 2

您应该看到一个上传表单。尝试上传图像文件（jpg，gif或png）。如果控制器中的路径正确，则应该可以。

<?php

class Upload extends CI_Controller {

        public function __construct()
        {
                parent::__construct();
                $this->load->helper(array('form', 'url'));
        }

        public function index()
        {
                $this->load->view('upload_form', array('error' => ' ' ));
        }

        public function do_upload()
        {
                $config['upload_path']          = './uploads/';
                $config['allowed_types']        = 'gif|jpg|png';
                $config['max_size']             = 100;
                $config['max_width']            = 1024;
                $config['max_height']           = 768;

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

                if ( ! $this->upload->do_upload('userfile'))
                {
                        $error = array('error' => $this->upload->display_errors());

                        $this->load->view('upload_form', $error);
                }
                else
                {
                        $data = array('upload_data' => $this->upload->data());

                        $this->load->view('upload_success', $data);
                }
        }
}
?>

您需要一个用于上传图像的目标目录。在CodeIgniter安装的根目录下创建一个名为uploads的目录，并将其文件权限设置为777。

有关文件上传的更多信息，请参见链接https://www.codeigniter.com/userguide3/libraries/file_uploading.html#preferences

Codigniter Rest API中的图像验证

2 个答案: