所有图片都以 40 字节保存，并且 php file_put_contents - 图片无效

Question

我正在使用此 php 代码从 url 抓取图像并将其保存到我的服务器。文件已创建且权限为 755。该过程正在使用产品名称重命名文件。当我尝试访问文件时，我在浏览器中收到此消息： The image cannot be displayed because it contains errors，所有文件都以40bytes大小保存。据我所知，输入数据是正确的，我怀疑 file_put_contents 是错误的...

// converting strings that have HR diacritics 
function replaceHRznakove($string){
    $hr_slova=array("Č","Ć","Ž","Š","Đ","č","ć","ž","š","đ", "\", "/","''",'"',"'","`",',',';',';','&','¸','!','#','$','%','=','<','>','?','*','@','§',"(",")","[","]","{","}");
    $asci_slova=array("C","C","Z","S","D","c","c","z","s","d","-", "-","",'',"","",'','','','','','','','','','','','','','','','','','','','','','');
    $converted_string=str_replace($hr_slova, $asci_slova, $string);
    return $converted_string;
}// end of function replaceHRznakove

// creating file with the product name
function createImage($product_name, $image_url, $image_location,$prod_code,$path_to_shop){
  $img_url = str_replace("https://","http://",$image_url);
  // checking if url returns 200 (exists) 
  if(urlExists($img_url)){
    // change blanks with dash
    $name_frags= explode(" ", $product_name);
    $filename= strtolower(implode("-", $name_frags));
    // calling function to replace strings
    $filename=replaceHRznakove($filename);
    // find file type (extension)
    $format_datoteke=pathinfo($img_url, PATHINFO_EXTENSION);
    $filename=$prod_code."-".$filename.".".$format_datoteke;
    // save file with new name and extension
    // checking if file already exists on server, if not we are creating new
    $file_location=$_SERVER['DOCUMENT_ROOT'].$path_to_shop.$image_location.$filename;
    if(file_exists($file_location)){
      $finfo = finfo_open(FILEINFO_MIME_TYPE);
    }
    else{
      file_put_contents($file_location, $img_url);
      $finfo = finfo_open(FILEINFO_MIME_TYPE);
    }
    $mime_type=finfo_file($finfo, $file_location);
    finfo_close($finfo);    
  }
  else{
    $filename="";
    $mime_type="";
  }
  return array($filename, $mime_type);
} // kraj funkcije createImate


// funkcija koja provjerava da li postoji datoteka iz URL-a
function urlExists($url){
   $headers=get_headers($url);
   return stripos($headers[0],"200 OK")?true:false;
} // kraj funkcije urlExists

感谢任何帮助。

编辑

正如评论中所建议的，我查看了文件中实际存储的内容，似乎文件中存储的不是图像数据 URL。因此，当在文本编辑器中打开文件 image.jpg 时，我看到以下内容：

http://www.somedomain.com/image.jpg

Answer 1

那是因为您将图像 url 作为内容保存到文件中：

file_put_contents($file_location, $img_url);

相反，您应该致电：

$image_data = file_get_contents($img_url);
...
file_put_contents($file_location, $image_data);

所有图片都以 40 字节保存，并且 php file_put_contents - 图片无效

All images are saved with 40bytes and php file_put_contents - images are not valid

php

image

save-image

编辑