如何在上传和存储在codeigniter中的数据库之前调整图像大小

Question

这是我的控制器代码

`

$type=explode('.', $_FILES['picture']['name']);

                        $type = $type[count($type)-1];



                        $url = "uploads/products/images/".uniqid(rand()).".".$type;

                        if(in_array($type, array('jpg','jpeg','png','JPG','JPGE','PNG') ) )
                        {
                            if(is_uploaded_file($_FILES['picture']['tmp_name']))
                            {
                               move_uploaded_file($_FILES['picture']['tmp_name'],$url);
                            }
                        }
                        '

Answer 1

由于您使用的是 CodeIgniter，它有自己的 Image Manipulation 类：

https://www.codeigniter.com/userguide3/libraries/image_lib.html

$config['image_library'] = 'gd2';
$config['source_image'] = '/path/to/image/mypic.jpg';
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width']         = 75;
$config['height']       = 50;

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

$this->image_lib->resize();

将宽度和高度变量设置为调整图像大小所需的值。