Standard input is empty

array(15) {
  ["TMPDIR"]=>
  string(11) "/tmp/apcSka"
  ["PATH"]=>
  string(28) "/usr/local/bin:/usr/bin:/bin"
  ["PWD"]=>
  string(12) "/home/WSMPrt"
  ["LANG"]=>
  string(11) "en_US.UTF-8"
  ["HOME"]=>
  string(12) "/home/WSMPrt"
  ["SHLVL"]=>
  string(1) "0"
  ["PHP_SELF"]=>
  string(8) "prog.php"
  ["SCRIPT_NAME"]=>
  string(8) "prog.php"
  ["SCRIPT_FILENAME"]=>
  string(8) "prog.php"
  ["PATH_TRANSLATED"]=>
  string(8) "prog.php"
  ["DOCUMENT_ROOT"]=>
  string(0) ""
  ["REQUEST_TIME_FLOAT"]=>
  float(1411411925.5813)
  ["REQUEST_TIME"]=>
  int(1411411925)
  ["argv"]=>
  array(1) {
    [0]=>
    string(8) "prog.php"
  }
  ["argc"]=>
  int(1)
}