如何使file_exists工作（Php）？

Question

I have made this code, to save images to a remote directory, but i have not an Idea where to code do nothing if file exists:

  $album_name = $row['album'];
if(file_exists("cdcovers/$album_name.jpg")){
    <---here
 } 

else {
//save images
$imageString =       file_get_contents(LastFMArtwork::getArtwork($row['artist'], $row['album'],    true, "large"));
$save = file_put_contents('/home/link/public_html   /cdcovers             /'.$row['album'].'.jpg',$imageString);
}   

Can i have some ideas?

Answer 1

if(!file_exists("cdcovers/$album_name.jpg")){
    //save images
    $imageString = get_contents(LastFMArtwork::getArtwork($row['artist'], $row['album'],    true, "large"));
    $save = file_put_contents('/home/link/public_html   /cdcovers             /'.$row['album'].'.jpg',$imageString);
}   

If the file does NOT exist, save it. It will do nothing if it does.