PHP download pictures to local server instance sharing

This article mainly shares with you a method of replacing the image path in the article with PHP and downloading the image to the local server. It has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor to take a look, I hope it can help everyone.

php Replace the image path in the article and download the image to the local server

/**
 * 获取替换文章中的图片路径
 * @param string $xstr 内容
 * @param string $oriweb 网址
 * @return string
 *
 */
function replaceimg($xstr, $oriweb){
  //保存路径
  $d = date('Ymd', time());
  $saveimgfile_1 = '/uploads/allimg/'.$d;
  $dirslsitss = DEDEROOT.$saveimgfile_1;//分类是否存在
  if(!is_dir($dirslsitss)) {
    @mkdir($dirslsitss, 0777);
  }
  //匹配图片的src
  preg_match_all('#<img.*?src="([^"]*)"[^>]*>#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 = $saveimgfile_1."/".$fileimgname;
      $xstr=str_replace($imgurl,$saveimgfile,$xstr);
    }
  }
  return $xstr;
}

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