Codeigniter 不上传 png 格式的图像文件

Question

Codeigniter 3.1.6 是我正在使用的版本。当我尝试以 jpg 格式上传文件时，它是成功的，但是以 png 格式上传文件不起作用这里是我的代码。我正在使用 dropzone.js 进行文件上传

观看次数

<form action="admin/addimg" enctype="multipart/form-data" class="dropzone" style="margin-bottom: 5%; border: 2px dashed #0087F7; border-radius: 5px; background: white;" id="imgupld"></form>

<script>
Dropzone.options.imgupld = {
    paramName: "file",
    maxFilesize: 20, // MB
    acceptedFiles: "image/*", // Accept images only
    dictDefaultMessage: "Drag your image here"
};
</script>

控制器

function addimg()
    {
        if (!empty($_FILES))
        {
            $tempFile = $_FILES['file']['tmp_name'];
            $targetPath = './assets/img/';
            $targetFile = $targetPath . $_FILES['file']['name'];
            move_uploaded_file($tempFile, $targetFile);
        }
    }

Answer 1

这可以通过使用 CI 上传库轻松完成。首先你需要在 config->autoload.php 中加载库

    $autoload['libraries'] = array('upload');

或在您的控制器中。示例

    class ImageUpload extends CI_Controller
    {
       public function Upload()
       {
          if($_FILES["uploadImage"]["error"]==4)//check if user select input any image to upload
          {
               $config['Upload_Path']='';//File upload path
               $config['allowed_types']='jpeg|jpg|png';//set the preferred  file formats here
               $config['max_size']=100000;// Max File Size

               if($this->upload->do_upload('uploadImage'))//uploading the data
                {
                    $uploadData=$this->upload->data();//get the details of uploaded data
                }else
                {
                   $error=$this->upload->display_errors();//this return the error message if any error thrown 
                }
          }
       }
    }