Standard input is empty

array(7) {
  ["_GET"]=>
  array(0) {
  }
  ["_POST"]=>
  array(0) {
  }
  ["_COOKIE"]=>
  array(0) {
  }
  ["_FILES"]=>
  array(0) {
  }
  ["argv"]=>
  array(1) {
    [0]=>
    string(8) "prog.php"
  }
  ["argc"]=>
  int(1)
  ["_SERVER"]=>
  array(17) {
    ["LANG"]=>
    string(11) "en_US.UTF-8"
    ["WORKSPACE"]=>
    string(41) "/tmp/0b5c4256-d28a-46e5-be85-284a7a535a92"
    ["PWD"]=>
    string(12) "/home/SIjhXz"
    ["HOME"]=>
    string(12) "/home/SIjhXz"
    ["TMPDIR"]=>
    string(11) "/tmp/yLuKqs"
    ["TMPDIR_GLOBAL"]=>
    string(41) "/tmp/0b5c4256-d28a-46e5-be85-284a7a535a92"
    ["SHLVL"]=>
    string(1) "0"
    ["PATH"]=>
    string(28) "/usr/local/bin:/usr/bin:/bin"
    ["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(1546278524.1376)
    ["REQUEST_TIME"]=>
    int(1546278524)
    ["argv"]=>
    array(1) {
      [0]=>
      string(8) "prog.php"
    }
    ["argc"]=>
    int(1)
  }
}
array(8) {
  ["_GET"]=>
  array(0) {
  }
  ["_POST"]=>
  array(0) {
  }
  ["_COOKIE"]=>
  array(0) {
  }
  ["_FILES"]=>
  array(0) {
  }
  ["argv"]=>
  array(1) {
    [0]=>
    string(8) "prog.php"
  }
  ["argc"]=>
  int(1)
  ["_SERVER"]=>
  array(17) {
    ["LANG"]=>
    string(11) "en_US.UTF-8"
    ["WORKSPACE"]=>
    string(41) "/tmp/0b5c4256-d28a-46e5-be85-284a7a535a92"
    ["PWD"]=>
    string(12) "/home/SIjhXz"
    ["HOME"]=>
    string(12) "/home/SIjhXz"
    ["TMPDIR"]=>
    string(11) "/tmp/yLuKqs"
    ["TMPDIR_GLOBAL"]=>
    string(41) "/tmp/0b5c4256-d28a-46e5-be85-284a7a535a92"
    ["SHLVL"]=>
    string(1) "0"
    ["PATH"]=>
    string(28) "/usr/local/bin:/usr/bin:/bin"
    ["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(1546278524.1376)
    ["REQUEST_TIME"]=>
    int(1546278524)
    ["argv"]=>
    array(1) {
      [0]=>
      string(8) "prog.php"
    }
    ["argc"]=>
    int(1)
  }
  ["test"]=>
  int(0)
}