Question

I need to see if a specific image exists on my cdn.

I’ve tried the following and it doesn’t work:

if (file_exists(http://www.example.com/images/$filename)) {
    echo "The file exists";
} else {
    echo "The file does not exist";
}

Even if the image exists or doesn’t exist, it always says “The file exists”. I’m not sure why its not working…

Answer 1

You need the filename in quotation marks at least (as string):

if (file_exists('http://www.mydomain.com/images/'.$filename)) {
 … }

Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config