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php采集文章中的图片获取替换到本地(实现代码)_php技巧

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Release: 2016-05-17 08:56:55
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复制代码 代码如下:

/**
 * 获取替换文章中的图片路径
 * @param string $xstr 内容
 * @param string $keyword 创建照片的文件名
 * @param string $oriweb 网址
 * @return string
 *
 */
function replaceimg($xstr,$keyword, $oriweb){

    //保存路径
    $d = date('Ymd', time());
    $dirslsitss = '/var/www/weblist/uploads/'.$keyword.'/'.$d;//分类是否存在
    if(!is_dir($dirslsitss)) {
        @mkdir($dirslsitss, 0777);
    }

    //匹配图片的src
    preg_match_all('#php采集文章中的图片获取替换到本地(实现代码)_php技巧]*>#i', $xstr, $match);

    foreach($match[1] as $imgurl){

        $imgurl = $imgurl;

        if(is_int(strpos($imgurl, 'http'))){
            $arcurl = $imgurl;
        } else {
            $arcurl = $oriweb.$imgurl;       
        }
        $img=file_get_contents($arcurl);

       
        if(!empty($img)) {

            //保存图片到服务器
            $fileimgname = time()."-".rand(1000,9999).".jpg";
            $filecachs=$dirslsitss."/".$fileimgname;
            $fanhuistr = file_put_contents( $filecachs, $img );
            $saveimgfile = "/uploads/$keyword"."/".$d."/".$fileimgname;

           
            $xstr=str_replace($imgurl,$saveimgfile,$xstr);
        }
    }
    return $xstr;
}
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