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PHP把文章中的远程图片采集到本地

Jun 13, 2016 am 10:36 AM
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今天写了一个这个功能, 拿出来跟php100的朋友一起分享

第一步. 先从文章中把所有PHP把文章中的远程图片采集到本地 用正则 抠出来.

    $message   //文章内容
    //正则(这个还不是)
    $reg = "/PHP把文章中的远程图片采集到本地]*/isU";
    //把抠出来的 img 地址存放到 $img_array 变量中
    preg_match_all($reg, $message, $img_array, PREG_PATTERN_ORDER);
    //过滤重复的图片
    $img_array = array_unique($img_array[1]);
[/php]
第二步. 把$img_array 数组循环一下. 做图片保存和文章位置替换
[php]
    foreach ($img_array as $img){
        //判断是否是自己网站上的 图片
        if(xxx.com != get_domain($img)){// 如果这个图片不是自己服务器上的
            //读取图片文件
            $Gimg = new GetImage();
            $Gimg->source = $img;
            $Gimg->save_to = ./data/temp/;
            $FILE =  $Gimg->download(); //图片移动到本地
            //保存到相册 得到图片保存的位置
            $img_path = pic_save($FILE,0,);
            //文本路径替换
            $message = str_replace($img, $img_path, $message);
           
        }
    }

    ....这时候 $message 里面已经图片已经替换为自己服务器本地的地址,并且图片也保存到自己的服务器上.
[/php]


[php]
//下面一个函数 和 类是从网络上找的.

//从url中获得域名
function get_domain($url){
    $pattern = "/[w-]+.(com|net|org|gov|cc|biz|info|cn)(.(cn|hk))*/";
    preg_match($pattern, $url, $matches);
    if(count($matches) > 0) {
        return $matches[0];
    }else{
        $rs = parse_url($url);
        $main_url = $rs["host"];
        if(!strcmp(long2ip(sprintf("%u",ip2long($main_url))),$main_url)) {
            return $main_url;
        }else{
            $arr = explode(".",$main_url);
            $count=count($arr);
            $endArr = array("com","net","org","3322");//com.cn  net.cn 等情况
            if (in_array($arr[$count-2],$endArr)){
                $domain = $arr[$count-3].".".$arr[$count-2].".".$arr[$count-1];
            }else{
                $domain =  $arr[$count-2].".".$arr[$count-1];
            }
            return $domain;
        }// end if(!strcmp...)
    }// end if(count...)
}// end function

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