You are looking at the HTML representation of the DBG format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the DBG format, set format=dbg.
See the complete documentation, or API help for more information.
array (
  'query' => 
  array (
    'namespaces' => 
    array (
      -2 => 
      array (
        'id' => -2,
        'case' => 'first-letter',
        '*' => 'Medium',
        'canonical' => 'Media',
      ),
      -1 => 
      array (
        'id' => -1,
        'case' => 'first-letter',
        '*' => 'Spezial',
        'canonical' => 'Special',
      ),
      0 => 
      array (
        'id' => 0,
        'case' => 'first-letter',
        '*' => '',
        'content' => '',
      ),
      1 => 
      array (
        'id' => 1,
        'case' => 'first-letter',
        '*' => 'Diskussion',
        'subpages' => '',
        'canonical' => 'Talk',
      ),
      2 => 
      array (
        'id' => 2,
        'case' => 'first-letter',
        '*' => 'Benutzer',
        'subpages' => '',
        'canonical' => 'User',
      ),
      3 => 
      array (
        'id' => 3,
        'case' => 'first-letter',
        '*' => 'Benutzer Diskussion',
        'subpages' => '',
        'canonical' => 'User talk',
      ),
      4 => 
      array (
        'id' => 4,
        'case' => 'first-letter',
        '*' => 'Equal Pay Wiki',
        'subpages' => '',
        'canonical' => 'Project',
      ),
      5 => 
      array (
        'id' => 5,
        'case' => 'first-letter',
        '*' => 'Equal Pay Wiki Diskussion',
        'subpages' => '',
        'canonical' => 'Project talk',
      ),
      6 => 
      array (
        'id' => 6,
        'case' => 'first-letter',
        '*' => 'Datei',
        'canonical' => 'File',
      ),
      7 => 
      array (
        'id' => 7,
        'case' => 'first-letter',
        '*' => 'Datei Diskussion',
        'subpages' => '',
        'canonical' => 'File talk',
      ),
      8 => 
      array (
        'id' => 8,
        'case' => 'first-letter',
        '*' => 'MediaWiki',
        'subpages' => '',
        'canonical' => 'MediaWiki',
      ),
      9 => 
      array (
        'id' => 9,
        'case' => 'first-letter',
        '*' => 'MediaWiki Diskussion',
        'subpages' => '',
        'canonical' => 'MediaWiki talk',
      ),
      10 => 
      array (
        'id' => 10,
        'case' => 'first-letter',
        '*' => 'Vorlage',
        'canonical' => 'Template',
      ),
      11 => 
      array (
        'id' => 11,
        'case' => 'first-letter',
        '*' => 'Vorlage Diskussion',
        'subpages' => '',
        'canonical' => 'Template talk',
      ),
      12 => 
      array (
        'id' => 12,
        'case' => 'first-letter',
        '*' => 'Hilfe',
        'subpages' => '',
        'canonical' => 'Help',
      ),
      13 => 
      array (
        'id' => 13,
        'case' => 'first-letter',
        '*' => 'Hilfe Diskussion',
        'subpages' => '',
        'canonical' => 'Help talk',
      ),
      14 => 
      array (
        'id' => 14,
        'case' => 'first-letter',
        '*' => 'Kategorie',
        'canonical' => 'Category',
      ),
      15 => 
      array (
        'id' => 15,
        'case' => 'first-letter',
        '*' => 'Kategorie Diskussion',
        'subpages' => '',
        'canonical' => 'Category talk',
      ),
      102 => 
      array (
        'id' => 102,
        'case' => 'first-letter',
        '*' => 'Attribut',
        'canonical' => 'Attribut',
      ),
      103 => 
      array (
        'id' => 103,
        'case' => 'first-letter',
        '*' => 'Attribut Diskussion',
        'subpages' => '',
        'canonical' => 'Attribut Diskussion',
      ),
      104 => 
      array (
        'id' => 104,
        'case' => 'first-letter',
        '*' => 'Type',
        'canonical' => 'Type',
      ),
      105 => 
      array (
        'id' => 105,
        'case' => 'first-letter',
        '*' => 'Type talk',
        'subpages' => '',
        'canonical' => 'Type talk',
      ),
      108 => 
      array (
        'id' => 108,
        'case' => 'first-letter',
        '*' => 'Konzept',
        'canonical' => 'Konzept',
      ),
      109 => 
      array (
        'id' => 109,
        'case' => 'first-letter',
        '*' => 'Konzept Diskussion',
        'canonical' => 'Konzept Diskussion',
      ),
      274 => 
      array (
        'id' => 274,
        'case' => 'first-letter',
        '*' => 'Widget',
        'canonical' => 'Widget',
      ),
      275 => 
      array (
        'id' => 275,
        'case' => 'first-letter',
        '*' => 'Widget Diskussion',
        'subpages' => '',
        'canonical' => 'Widget talk',
      ),
      420 => 
      array (
        'id' => 420,
        'case' => 'first-letter',
        '*' => 'Layer',
        'canonical' => 'Layer',
      ),
      421 => 
      array (
        'id' => 421,
        'case' => 'first-letter',
        '*' => 'Layer Diskussion',
        'canonical' => 'Layer talk',
      ),
    ),
  ),
)