PHP下载远程图片并保存到本地

方式1：
/**
* 远程下载图片
* @param $url
* @param string $save_dir
* @param string $filename
* @param int t y p e ∗ @ r e t u r n a r r a y ∗ / p u b l i c s t a t i c f u n c t i o n g e t I m a g e ( type * @return array */ public static function getImage( type∗@returnarray∗/publicstaticfunctiongetImage(url, $save_dir = ‘’, $filename = ‘’, KaTeX parse error: Expected '}', got 'EOF' at end of input: … if (trim(url) == ‘’) {
return array(‘code’ => 1, ‘error’ => ‘文件url不合法’);
}
if (trim($save_dir) == ‘’) {
KaTeX parse error: Expected 'EOF', got '}' at position 26: … './'; }̲ if (tr…filename) == ‘’) {//保存文件名
e x t = s t r r c h r ( ext = strrchr( ext=strrchr(url, ‘.’);
if ($ext != ‘.gif’ && $ext != ‘.jpg’ && $ext != ‘.png’) {
return array(‘code’ => 3, ‘error’ => ‘文件类型不合法’);
}
f i l e n a m e = s u b s t r ( filename = substr( filename=substr(url, strripos($url, “/”) + 1);
} else{
e x t = s t r r c h r ( ext = strrchr( ext=strrchr(url, ‘.’);
if ($ext != ‘.gif’ && $ext != ‘.jpg’ && $ext != ‘.png’) {
return array(‘code’ => 3, ‘error’ => ‘文件类型不合法’);
}
f i l e n a m e = ′ s t a t i c / h o m e / i m g s / ′ . filename = 'static/home/imgs/'. filename=′static/home/imgs/′.filename.’.png’;
}

    if (0 !== strrpos($save_dir, '/')) {
        $save_dir .= '/';
    }
    //创建保存目录
    if (!file_exists($save_dir) && !mkdir($save_dir, 0777, true)) {
        return array('code' => 5, 'error' => '创建文件失败');
    }
    //获取远程文件所采用的方法
    if ($type) {
        $ch = curl_init();
        $timeout = 5;
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        $img = curl_exec($ch);
        curl_close($ch);
    } else {
        ob_start();
        readfile($url);
        $img = ob_get_contents();
        ob_end_clean();
    }
    //$size=strlen($img);
    //文件大小
    $fp2 = @fopen($save_dir . $filename, 'a');

    dump($img);die;
    fwrite($fp2, $img);
    fclose($fp2);
    unset($img, $url);
    return $filename;
}

方式2：
/**
* 获取远程图片
* @param $imgUrl 图片地址
* @param g o o d s i d 保 存 的 文 件 名 ∗ @ r e t u r n s t r i n g ∗ / p u b l i c s t a t i c f u n c t i o n G D k ( goodsid 保存的文件名 * @return string */ public static function GDk( goodsid保存的文件名∗@returnstring∗/publicstaticfunctionGDk(imgUrl,$goodsid)
{
f o r m a t = s u b s t r ( format = substr( format=substr(imgUrl,-4);

    if($format === '.jpg' || $format === 'jpeg')
    {
        $src_im = imagecreatefromjpeg ($imgUrl);
    }elseif($format === '.png'){
        $src_im = imagecreatefrompng ($imgUrl);
    }
    $srcW = ImageSX($src_im); //获得图像的宽
    $srcH = ImageSY($src_im); //获得图像的高
    $dst_im = ImageCreateTrueColor($srcW,$srcH); //创建新的图像对象

    if($format === 'jpeg')
    {
        $format = '.jpeg';
    }

    $path = "static/home/poster/product_img/".$goodsid.$format;//保存地址
    imagecopy($dst_im, $src_im, 0, 0, 0, 0, $srcW, $srcH);
    imagejpeg($dst_im, $path); //创建缩略图文件

    $images = Image::open($path);
    // 按照原图的比例生成一个最大为150*150的缩略图并保存为thumb.png
    $images->thumb(680,680)->save($path);

    return $path;
}