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',
        '*' => '',
        'subpages' => '',
        'content' => '',
      ),
      1 => 
      array (
        'id' => 1,
        'case' => 'first-letter',
        '*' => 'Kommentar',
        'subpages' => '',
        'canonical' => 'Talk',
      ),
      2 => 
      array (
        'id' => 2,
        'case' => 'first-letter',
        '*' => 'Benutzer',
        'subpages' => '',
        'canonical' => 'User',
      ),
      3 => 
      array (
        'id' => 3,
        'case' => 'first-letter',
        '*' => 'Benutzer Kommentar',
        'subpages' => '',
        'canonical' => 'User talk',
      ),
      4 => 
      array (
        'id' => 4,
        'case' => 'first-letter',
        '*' => 'Lobbypedia',
        'subpages' => '',
        'canonical' => 'Project',
      ),
      5 => 
      array (
        'id' => 5,
        'case' => 'first-letter',
        '*' => 'Lobbypedia 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',
      ),
      100 => 
      array (
        'id' => 100,
        'case' => 'first-letter',
        '*' => 'Secure',
        'canonical' => 'Secure',
        'nonincludable' => '',
      ),
      101 => 
      array (
        'id' => 101,
        'case' => 'first-letter',
        '*' => 'Secure Diskussion',
        'canonical' => 'Secure Diskussion',
      ),
      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',
        '*' => 'Entwurf',
        'subpages' => '',
        'canonical' => 'Type',
        'nonincludable' => '',
      ),
      105 => 
      array (
        'id' => 105,
        'case' => 'first-letter',
        '*' => 'Entwurf Diskussion',
        'subpages' => '',
        'canonical' => 'Type talk',
      ),
      106 => 
      array (
        'id' => 106,
        'case' => 'first-letter',
        '*' => 'Formular',
        'canonical' => 'Form',
      ),
      107 => 
      array (
        'id' => 107,
        'case' => 'first-letter',
        '*' => 'Formular Diskussion',
        'subpages' => '',
        'canonical' => 'Form talk',
      ),
      108 => 
      array (
        'id' => 108,
        'case' => 'first-letter',
        '*' => 'Konzept',
        'canonical' => 'Konzept',
      ),
      109 => 
      array (
        'id' => 109,
        'case' => 'first-letter',
        '*' => 'Konzept Diskussion',
        'subpages' => '',
        'canonical' => 'Konzept Diskussion',
      ),
      1502 => 
      array (
        'id' => 1502,
        'case' => 'first-letter',
        '*' => 'Blog',
        'canonical' => 'Blog',
      ),
      1503 => 
      array (
        'id' => 1503,
        'case' => 'first-letter',
        '*' => 'Blog talk',
        'canonical' => 'Blog talk',
      ),
      3000 => 
      array (
        'id' => 3000,
        'case' => 'first-letter',
        '*' => 'Parteispende',
        'subpages' => '',
        'canonical' => 'Parteispende',
      ),
      3001 => 
      array (
        'id' => 3001,
        'case' => 'first-letter',
        '*' => 'Parteispende Kommentar',
        'subpages' => '',
        'canonical' => 'Parteispende Kommentar',
        'content' => '',
      ),
      3002 => 
      array (
        'id' => 3002,
        'case' => 'first-letter',
        '*' => 'Parteispende Diskussion Kommentar',
        'canonical' => 'Parteispende Diskussion Kommentar',
      ),
      3003 => 
      array (
        'id' => 3003,
        'case' => 'first-letter',
        '*' => 'Archiv',
        'canonical' => 'Archiv',
        'nonincludable' => '',
      ),
      3004 => 
      array (
        'id' => 3004,
        'case' => 'first-letter',
        '*' => 'Archiv Kommentar',
        'subpages' => '',
        'canonical' => 'Archiv Kommentar',
      ),
    ),
  ),
)