Codeigniter多文件上传与缩略图实现代码

WBOY

リリース： 2016-07-25 08:53:08

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class Upload extends Controller {
function go() {
if(isset($_POST['go'])) {
//初始化
$config['upload_path'] = 'album/source';
$config['allowed_types'] = 'gif|jpg|png|bmp|jpeg';
$config['encrypt_name'] = TRUE;
$config['remove_spaces'] = TRUE;
$config['max_size'] = '0';
$config['max_width'] = '0';
$config['max_height'] = '0';
$this->load->library('upload', $config);
//170*170图片
$configThumb = array();
$configThumb['image_library'] = 'gd2';
$configThumb['source_image'] = '';
$configThumb['create_thumb'] = TRUE;
$configThumb['maintain_ratio'] = TRUE; //保持图片比例
$configThumb['new_image'] = 'album/thumb';
$configThumb['width'] = 170;
$configThumb['height'] = 170;
//600*600图片
$configLarge = array();
$configLarge['image_library'] = 'gd2';
$configLarge['source_image'] = '';
$configLarge['create_thumb'] = TRUE;
$configLarge['maintain_ratio'] = TRUE; //保持图片比例
$configLarge['new_image'] = 'album/large';
$configLarge['width'] = 600;
$configLarge['height'] = 600;
$this->load->library('image_lib');
for($i = 1; $i $upload = $this->upload->do_upload('image'.$i);
if($upload === FALSE) continue;
$data = $this->upload->data();//返回上传文件的所有相关信息的数组
$uid = $this->session->userdata('uid');
$uploadedFiles[$i] = $data;
if($data['is_image'] == 1) {
//初始化170*170
$configThumb['source_image'] = $data['full_path']; //文件路径带文件名
$this->image_lib->initialize($configThumb);
$this->image_lib->resize();
//初始化600*600
$configLarge['source_image'] = $data['full_path']; //文件路径带文件名
$this->image_lib->initialize($configLarge);
$this->image_lib->resize();
}
//插入图片信息到album表,插入的文件名为source目录文件名
$picture = array(
'filename' => $data['file_name'],
'albumID' => $this->uri->segment(4,0),
'uid' => $this->session->userdata('uid'),
'dateline' => time(),
'describe' => '',
'click' => 0
);
$this->load->model('album_model');
$this->album_model->AddPic($picture);
$picture = array();
}
}
/* 转出 */
$albumID = $this->uri->segment(4);
$backurl = site_url() . 'photo/editpic/album/' .$albumID;
$this->session->set_flashdata('msg','图片上传成功.');
redirect($backurl,'refresh');
}
}

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2，views:new_pic.view文件：

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type="submit" name="go" value="上传照片" class="button" />

注意事项： 1，要一次上传几个文件，修改表单和控制器中循环部分的参数就好。 2，album\\source 是上传后原图目录 large和thumb分别是两次执行$this->image_lib->resize();后存放缩略图的目录。 3，缩略图文件名，如需和album\\source目录一致，请添加参数 $config['thumb_marker'] = '';。 4，$picture 这部分数组是保存到数据库的东西，无需理会。