[FileSize URL] Get FileSize of an URL without downloading the file #php #function #filesize

filesize_url.php

/* ------------------------------------------------------------------------------------------- */
/* [FileSize URL] Get FileSize of an URL without downloading the file #php #function #filesize */
/* ------------------------------------------------------------------------------------------- */

function getRemoteFileSize($url) {
  ini_set('user_agent', 'Mozilla/5.0');
  if (substr($url,0,4)=='http') {
    $header = array_change_key_case(get_headers($url, 1), CASE_LOWER);
    #echo'<pre>';var_dump($$header);
    if ( strcasecmp($header[0], 'HTTP/1.1 200 OK') != 0 ) { 
      $header = $$header['content-length'][1]; 
    } else { 
      $header = $header['content-length']; 
    }
  } else {
    $$header = @filesize($url);
  }
  return $x;
}