How can one check to see if a remote file exists using PHP?

Question

The best I could find, an if fclose fopen type thing, makes the page load really slowly.

Basically what I\'m trying to do is

Answer 1

function remote_file_exists($url){
   return(bool)preg_match('~HTTP/1\.\d\s+200\s+OK~', @current(get_headers($url)));
}  
$ff = "http://www.emeditor.com/pub/emed32_11.0.5.exe";
    if(remote_file_exists($ff)){
        echo "file exist!";
    }
    else{
        echo "file not exist!!!";
    }