php 采集远程服务器图片文件

class GetImage {

var $source;

var $save_to;

var $quality;

function download($method = 'curl') {

    $info = @GetImageSize($this->source);

    $mime = $info['mime'];

// What sort of image?

    $type = substr(strrchr($mime, '/'), 1);

    switch ($type){

        case 'jpeg':

            $image_create_func = 'ImageCreateFromJPEG';

            $image_save_func = 'ImageJPEG';

            $new_image_ext = 'jpg';

            // Best Quality: 100

            $quality = isSet($this->quality) ? $this->quality : 100;

            break;

        case 'png':

            $image_create_func = 'ImageCreateFromPNG';

            $image_save_func = 'ImagePNG';

            $new_image_ext = 'png';

            // Compression Level: from 0  (no compression) to 9

            $quality = isSet($this->quality) ? $this->quality : 0;

            break;

        case 'bmp':

            $image_create_func = 'ImageCreateFromBMP';

            $image_save_func = 'ImageBMP';

            $new_image_ext = 'bmp';

            break;

        case 'gif':

            $image_create_func = 'ImageCreateFromGIF';

            $image_save_func = 'ImageGIF';

            $new_image_ext = 'gif';

            break;

        case 'vnd.wap.wbmp':

            $image_create_func = 'ImageCreateFromWBMP';

            $image_save_func = 'ImageWBMP';

            $new_image_ext = 'bmp';

            break;

        case 'xbm':

            $image_create_func = 'ImageCreateFromXBM';

            $image_save_func = 'ImageXBM';

            $new_image_ext = 'xbm';

            break;

        default:

            $image_create_func = 'ImageCreateFromJPEG';

            $image_save_func = 'ImageJPEG';

            $new_image_ext = 'jpg';

    }

    if(isSet($this->set_extension)){

        $ext = strrchr($this->source, ".");

        $strlen = strlen($ext);

        $new_name = basename(substr($this->source, 0, -$strlen)).'.'.$new_image_ext;

    }else{

        $new_name = basename($this->source);

    }

    $save_to = $this->save_to."/blog_insert_temp_".time().mt_rand(1,99).".".$new_image_ext;

    //输出对象 组成跟$_FILE变量一样 得到后自己和平常图片上传处理一样了

    $img_info['name'] = basename($this->source);

    $img_info['type'] = $mime;

    $img_info['size'] = 1000;

    $img_info['tmp_name'] = $save_to;

    $img_info['error'] = 0;

    if($method == 'curl'){

        $save_image = $this->LoadImageCURL($save_to);

    }elseif($method == 'gd'){

        $img = $image_create_func($this->source);

            if(isSet($quality)){

               $save_image = $image_save_func($img, $save_to, $quality);

            }else{

               $save_image = $image_save_func($img, $save_to);

            }

    }

         return $img_info;

    }

    function LoadImageCURL($save_to){

        $ch = curl_init($this->source);

        $fp = fopen($save_to, "wb");

        // set URL and other appropriate options

        $options = array(CURLOPT_FILE => $fp,

                         CURLOPT_HEADER => 0,

                         CURLOPT_FOLLOWLOCATION => 1,

                         CURLOPT_TIMEOUT => 60); // 1 minute timeout (should be enough)

        curl_setopt_array($ch, $options);

        curl_exec($ch);

        curl_close($ch);

        fclose($fp);

    }

}