string(12) "hello world!"
hello world!Array
(
    [_GET] => Array
        (
        )

    [_POST] => Array
        (
        )

    [_COOKIE] => Array
        (
        )

    [_FILES] => Array
        (
        )

    [argv] => Array
        (
            [0] => Main.php
        )

    [argc] => 1
    [_SERVER] => Array
        (
            [HOSTNAME] => 2d1e8292a2f6
            [HOME] => /workspace
            [RUNNER_USER] => runner3
            [PATH] => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
            [LANG] => en_US.UTF-8
            [PWD] => /workspace
            [PHP_SELF] => Main.php
            [SCRIPT_NAME] => Main.php
            [SCRIPT_FILENAME] => Main.php
            [PATH_TRANSLATED] => Main.php
            [DOCUMENT_ROOT] => 
            [REQUEST_TIME_FLOAT] => 1548088808.8012
            [REQUEST_TIME] => 1548088808
            [argv] => Array
                (
                    [0] => Main.php
                )

            [argc] => 1
        )

    [myVar] => hello world!
)
array(8) refcount(2){
  ["_GET"]=>
  array(0) refcount(3){
  }
  ["_POST"]=>
  array(0) refcount(3){
  }
  ["_COOKIE"]=>
  array(0) refcount(3){
  }
  ["_FILES"]=>
  array(0) refcount(3){
  }
  ["argv"]=>
  array(1) refcount(3){
    [0]=>
    string(8) "Main.php" refcount(1)
  }
  ["argc"]=>
  int(1)
  ["_SERVER"]=>
  array(15) refcount(3){
    ["HOSTNAME"]=>
    string(12) "2d1e8292a2f6" refcount(1)
    ["HOME"]=>
    string(10) "/workspace" refcount(1)
    ["RUNNER_USER"]=>
    string(7) "runner3" refcount(1)
    ["PATH"]=>
    string(60) "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" refcount(1)
    ["LANG"]=>
    string(11) "en_US.UTF-8" refcount(1)
    ["PWD"]=>
    string(10) "/workspace" refcount(1)
    ["PHP_SELF"]=>
    string(8) "Main.php" refcount(1)
    ["SCRIPT_NAME"]=>
    string(8) "Main.php" refcount(1)
    ["SCRIPT_FILENAME"]=>
    string(8) "Main.php" refcount(1)
    ["PATH_TRANSLATED"]=>
    string(8) "Main.php" refcount(1)
    ["DOCUMENT_ROOT"]=>
    string(0) "" refcount(1)
    ["REQUEST_TIME_FLOAT"]=>
    float(1548088808.8012)
    ["REQUEST_TIME"]=>
    int(1548088808)
    ["argv"]=>
    array(1) refcount(3){
      [0]=>
      string(8) "Main.php" refcount(1)
    }
    ["argc"]=>
    int(1)
  }
  ["myVar"]=>
  string(12) "hello world!" refcount(1)
}
hello world!#0  sayHello(hello world!) called at [/workspace/Main.php:17]