仅根据宽度调整图像大小并裁剪额外高度，Codeigniter

Question

我需要根据 仅宽度 调整图像大小，而不是高度 :( 因为我正在使用** $config['maintain_ratio'] = TRUE;** ，codeigniter 会自动解决它（这就是问题）有时我会得到一个黑色实心作为额外的宽度或高度，

我查看了所有与 codegniter 的图片相关的问题 图书馆，我找不到任何与我的问题相关的东西:(

这是对最终结果的描述...

上传后我有这个...

$this->load->library('md_image');
        $source='assets/img/hotellist/'.$data1['hotel_pictures'];
        $width=746;
        $height=400;
        $dest = FALSE;
        //$this->md_image->resize_image($source, $width, $height, $source);
            $config['image_library'] = 'gd2';//imagemagik
            $config['source_image'] = 'assets/img/hotellist/'.$data1['hotel_pictures'];
            //$config['image_library'] = 'imagemagick';
            //$config['library_path'] = '/usr/X11R6/bin/';
            $config['create_thumb'] = FALSE;
            $config['maintain_ratio'] = TRUE;
            $config['width']     = 746;
            $config['height']   = 400;
            $config['quality']   = 75;
            $config['encrypt_name'] = TRUE;
            $config['remove_spaces'] = TRUE;
            //$config['x_axis'] = 100;
            //$config['y_axis'] = 300;
            $img =$config['source_image'];
            //var_dump('check problem',$config['source_image']);

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

            $this->image_lib->resize();

然后我负责裁剪部分

$new_img =$this->md_image->crop_to_ratio($source, $width, $height, $x = 17, $y = 9, $dest = FALSE);

总结一下，有人上传图片，它只根据宽度调整大小 然后它被裁剪

PS：如果有人需要它md_image

Answer 1

function resize_than_crop($path, $new_path, $width = 400, $height = 746) {

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

    $this->image_lib->initialize(array(
        'image_library' => 'gd2',
        'source_image' => $path,
        'new_image' => $new_path,
        'maintain_ratio' => true,
        'master_dim' => 'width',
        'width' => $width
    ));
    $this->image_lib->resize();

    $this->image_lib->clear();

    $this->image_lib->initialize(array(
        'image_library' => 'gd2',
        'source_image' => $new_path,
        'height' => $height
    ));
    $this->image_lib->crop();
}

Answer 2

$this->load->library('md_image');
        $source='assets/img/hotellist/'.$data1['hotel_pictures'];
        $width=746;
        $height=400;
        $size = getimagesize($source);
        $resize_height=($size[1]*746)/$size[0];
        $dest = FALSE;
        //$this->md_image->resize_image($source, $width, $height, $source);
            $config['image_library'] = 'gd2';//imagemagik
            $config['source_image'] = 'assets/img/hotellist/'.$data1['hotel_pictures'];
            //$config['image_library'] = 'imagemagick';
            //$config['library_path'] = '/usr/X11R6/bin/';
            $config['create_thumb'] = FALSE;
            $config['maintain_ratio'] = TRUE;
            $config['width']     = 746;
            $config['height']   = $resize_height;
            $config['quality']   = 75;
            $config['encrypt_name'] = TRUE;
            $config['remove_spaces'] = TRUE;
            //$config['x_axis'] = 100;
            //$config['y_axis'] = 300;
            $img =$config['source_image'];
            //var_dump('check problem',$config['source_image']);

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

            $this->image_lib->resize();