Description:
------------
---
From manual page: http://www.php.net/function.yaml-parse
---
yaml_parse and yaml_parse_file incorretly parses yaml


Test script:
---------------
> yaml_parse('N: 1')
Array(
  [] => 1
)
> yaml_parse('n: 1')
Array(
  [] => 1
)
> yaml_parse('a: 1')
Array(
  a => 1
)
> yaml_parse('l: 1')
Array(
  l => 1
)
> yaml_parse('NN: 1')
Array(
  NN => 1
)


Expected result:
----------------
> yaml_parse('N: 1')
Array(
  'N' => 1
)
> yaml_parse('n: 1')
Array(
  'n' => 1
)

Actual result:
--------------
> yaml_parse('N: 1')
Array(
  [] => 1
)
> yaml_parse('n: 1')
Array(
  [] => 1
)