调整多个图像字段的大小答案

【问题标题】：resizing multiple fields of image调整多个图像字段的大小
【发布时间】：2020-07-29 03:48:50
【问题描述】：

我有一个表单，其中包含一些图像文件字段，将所有这些值提交给我的控制器，收到所有字段后，我只能调整图像文件的一个字段，其余图像字段不会调整大小。

这是我的看法

<input type="file" name="image" size="20" />
<input type="file" name="image2" size="20" />
<input type="submit" value="upload" />

这是我的控制器

public function resizeImage($filename){
  $source_path = './upload/' . $filename;
  $target_path = './upload/';
  $config_manip = array(
    'image_library' => 'gd2',
    'source_image' => $source_path,
    'new_image' => $target_path,
    'maintain_ratio' => TRUE,
    'width' => 500,
  );
  $this->load->library('image_lib', $config_manip);
  if (!$this->image_lib->resize()) {
     echo $this->image_lib->display_errors();
  }
  $this->image_lib->clear();
}

public function uploadImage() { 
  $config['upload_path']   = './upload/'; 
  $config['allowed_types'] = 'gif|jpg|png'; 
  $config['max_size']      = 1024;
  $this->load->library('upload', $config);
  if ($this->upload->do_upload('image')) {
      $error = array('error' => $this->upload->display_errors()); 
      $uploadedImage = $this->upload->data();
      $this->resizeImage($uploadedImage['file_name']);
      print_r('Image Uploaded Successfully.');
      /*exit;*/
  }
  if ($this->upload->do_upload('image2')) {
      $error = array('error' => $this->upload->display_errors()); 
      $uploadedImage = $this->upload->data();
      $this->resizeImage($uploadedImage['file_name']);
      print_r('Image Uploaded Successfully.');
      /*exit;*/
   } 
}

为了调整图像大小，我创建了一个函数，我在其中传递图像详细信息，并且图像可以调整其大小。但它只调整一次大小，第二次以正常大小上传图片。

【问题讨论】：

标签： php html codeigniter

【解决方案1】：

当您使用 codeigniter 上传库时，要更改配置，您必须使用 initialize。

public function resizeImage($filename){
  $source_path = './upload/' . $filename;
  $target_path = './upload/';
  $config_manip = array(
    'image_library' => 'gd2',
    'source_image' => $source_path,
    'new_image' => $target_path,
    'maintain_ratio' => TRUE,
    'width' => 500,
  );
  //change load library to initialize
  $this->image_lib->initialize($config_manip); 
  if (!$this->image_lib->resize()) {
     echo $this->image_lib->display_errors();
  }
  $this->image_lib->clear();
}

$this->load->library('upload', $config);
$this->load->library('image_lib');//load library outside your resizeImage function
  if ($this->upload->do_upload('image')) {
      $error = array('error' => $this->upload->display_errors()); 
      $uploadedImage = $this->upload->data();
      $this->resizeImage($uploadedImage['file_name']);
      print_r('Image Uploaded Successfully.');
      /*exit;*/
  }
  if ($this->upload->do_upload('image2')) {
      $error = array('error' => $this->upload->display_errors()); 
      $uploadedImage = $this->upload->data();
      $this->resizeImage($uploadedImage['file_name']);
      print_r('Image Uploaded Successfully.');
      /*exit;*/
   }

【讨论】：