readfile.php  simple read file example
  php source code
  $myfile = fopen("file.txt", "r") or die("Unable to open file.txt!");
  $data = fread($myfile,filesize("file.txt"));
  fclose($myfile);
  echo $data;
  echo "now a line at a time 
\n";
  $myfile = fopen("file.txt", "r") or die("Unable to open file.txt!");
  while(!feof($myfile)) {
    echo fgets($myfile);
  }
  fclose($myfile);
  
  Unable to open file.txt!