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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
array (
  'query' => 
  array (
    'namespaces' => 
    array (
      -2 => 
      array (
        'id' => -2,
        'case' => 'first-letter',
        '*' => 'Media',
        'canonical' => 'Media',
      ),
      -1 => 
      array (
        'id' => -1,
        'case' => 'first-letter',
        '*' => 'Special',
        'canonical' => 'Special',
      ),
      0 => 
      array (
        'id' => 0,
        'case' => 'first-letter',
        '*' => '',
        'subpages' => '',
        'content' => '',
      ),
      1 => 
      array (
        'id' => 1,
        'case' => 'first-letter',
        '*' => 'Talk',
        'subpages' => '',
        'canonical' => 'Talk',
      ),
      2 => 
      array (
        'id' => 2,
        'case' => 'first-letter',
        '*' => 'User',
        'subpages' => '',
        'canonical' => 'User',
      ),
      3 => 
      array (
        'id' => 3,
        'case' => 'first-letter',
        '*' => 'User talk',
        'subpages' => '',
        'canonical' => 'User talk',
      ),
      4 => 
      array (
        'id' => 4,
        'case' => 'first-letter',
        '*' => 'Brickipedia',
        'subpages' => '',
        'canonical' => 'Project',
      ),
      5 => 
      array (
        'id' => 5,
        'case' => 'first-letter',
        '*' => 'Brickipedia talk',
        'subpages' => '',
        'canonical' => 'Project talk',
      ),
      6 => 
      array (
        'id' => 6,
        'case' => 'first-letter',
        '*' => 'File',
        'subpages' => '',
        'canonical' => 'File',
      ),
      7 => 
      array (
        'id' => 7,
        'case' => 'first-letter',
        '*' => 'File talk',
        'subpages' => '',
        'canonical' => 'File talk',
      ),
      8 => 
      array (
        'id' => 8,
        'case' => 'first-letter',
        '*' => 'MediaWiki',
        'subpages' => '',
        'canonical' => 'MediaWiki',
      ),
      9 => 
      array (
        'id' => 9,
        'case' => 'first-letter',
        '*' => 'MediaWiki talk',
        'subpages' => '',
        'canonical' => 'MediaWiki talk',
      ),
      10 => 
      array (
        'id' => 10,
        'case' => 'first-letter',
        '*' => 'Template',
        'subpages' => '',
        'canonical' => 'Template',
      ),
      11 => 
      array (
        'id' => 11,
        'case' => 'first-letter',
        '*' => 'Template talk',
        'subpages' => '',
        'canonical' => 'Template talk',
      ),
      12 => 
      array (
        'id' => 12,
        'case' => 'first-letter',
        '*' => 'Help',
        'subpages' => '',
        'canonical' => 'Help',
      ),
      13 => 
      array (
        'id' => 13,
        'case' => 'first-letter',
        '*' => 'Help talk',
        'subpages' => '',
        'canonical' => 'Help talk',
      ),
      14 => 
      array (
        'id' => 14,
        'case' => 'first-letter',
        '*' => 'Category',
        'subpages' => '',
        'canonical' => 'Category',
      ),
      15 => 
      array (
        'id' => 15,
        'case' => 'first-letter',
        '*' => 'Category talk',
        'subpages' => '',
        'canonical' => 'Category talk',
      ),
      110 => 
      array (
        'id' => 110,
        'case' => 'first-letter',
        '*' => 'Forum',
        'subpages' => '',
        'canonical' => 'Forum',
      ),
      111 => 
      array (
        'id' => 111,
        'case' => 'first-letter',
        '*' => 'Forum talk',
        'subpages' => '',
        'canonical' => 'Forum talk',
      ),
      112 => 
      array (
        'id' => 112,
        'case' => 'first-letter',
        '*' => 'Magazine',
        'subpages' => '',
        'canonical' => 'Magazine',
        'content' => '',
      ),
      113 => 
      array (
        'id' => 113,
        'case' => 'first-letter',
        '*' => 'Magazine talk',
        'subpages' => '',
        'canonical' => 'Magazine talk',
      ),
      114 => 
      array (
        'id' => 114,
        'case' => 'first-letter',
        '*' => 'Inventory',
        'canonical' => 'Inventory',
        'content' => '',
      ),
      115 => 
      array (
        'id' => 115,
        'case' => 'first-letter',
        '*' => 'Inventory talk',
        'canonical' => 'Inventory talk',
      ),
      116 => 
      array (
        'id' => 116,
        'case' => 'first-letter',
        '*' => 'Custom',
        'subpages' => '',
        'canonical' => 'Custom',
        'content' => '',
      ),
      117 => 
      array (
        'id' => 117,
        'case' => 'first-letter',
        '*' => 'Custom talk',
        'subpages' => '',
        'canonical' => 'Custom talk',
      ),
      118 => 
      array (
        'id' => 118,
        'case' => 'first-letter',
        '*' => 'Review',
        'subpages' => '',
        'canonical' => 'Review',
        'content' => '',
      ),
      119 => 
      array (
        'id' => 119,
        'case' => 'first-letter',
        '*' => 'Review talk',
        'subpages' => '',
        'canonical' => 'Review talk',
      ),
      302 => 
      array (
        'id' => 302,
        'case' => 'first-letter',
        '*' => 'Property',
        'canonical' => 'Property',
      ),
      303 => 
      array (
        'id' => 303,
        'case' => 'first-letter',
        '*' => 'Property talk',
        'subpages' => '',
        'canonical' => 'Property talk',
      ),
      304 => 
      array (
        'id' => 304,
        'case' => 'first-letter',
        '*' => 'Type',
        'canonical' => 'Type',
      ),
      305 => 
      array (
        'id' => 305,
        'case' => 'first-letter',
        '*' => 'Type talk',
        'canonical' => 'Type talk',
      ),
      306 => 
      array (
        'id' => 306,
        'case' => 'first-letter',
        '*' => 'Form',
        'canonical' => 'Form',
      ),
      307 => 
      array (
        'id' => 307,
        'case' => 'first-letter',
        '*' => 'Form talk',
        'subpages' => '',
        'canonical' => 'Form talk',
      ),
      308 => 
      array (
        'id' => 308,
        'case' => 'first-letter',
        '*' => 'Concept',
        'canonical' => 'Concept',
      ),
      309 => 
      array (
        'id' => 309,
        'case' => 'first-letter',
        '*' => 'Concept talk',
        'subpages' => '',
        'canonical' => 'Concept talk',
      ),
      370 => 
      array (
        'id' => 370,
        'case' => 'first-letter',
        '*' => 'Filter',
        'canonical' => 'Filter',
      ),
      371 => 
      array (
        'id' => 371,
        'case' => 'first-letter',
        '*' => 'Filter talk',
        'subpages' => '',
        'canonical' => 'Filter talk',
      ),
      500 => 
      array (
        'id' => 500,
        'case' => 'first-letter',
        '*' => 'User blog',
        'subpages' => '',
        'canonical' => 'User blog',
      ),
      501 => 
      array (
        'id' => 501,
        'case' => 'first-letter',
        '*' => 'User blog comment',
        'subpages' => '',
        'canonical' => 'User blog comment',
      ),
      502 => 
      array (
        'id' => 502,
        'case' => 'first-letter',
        '*' => 'Blog',
        'subpages' => '',
        'canonical' => 'Blog',
      ),
      503 => 
      array (
        'id' => 503,
        'case' => 'first-letter',
        '*' => 'Blog talk',
        'subpages' => '',
        'canonical' => 'Blog talk',
      ),
      828 => 
      array (
        'id' => 828,
        'case' => 'first-letter',
        '*' => 'Module',
        'subpages' => '',
        'canonical' => 'Module',
      ),
      829 => 
      array (
        'id' => 829,
        'case' => 'first-letter',
        '*' => 'Module talk',
        'subpages' => '',
        'canonical' => 'Module talk',
      ),
      1200 => 
      array (
        'id' => 1200,
        'case' => 'first-letter',
        '*' => 'Message Wall',
        'subpages' => '',
        'canonical' => 'Message Wall',
      ),
      1201 => 
      array (
        'id' => 1201,
        'case' => 'first-letter',
        '*' => 'Thread',
        'subpages' => '',
        'canonical' => 'Thread',
      ),
      1202 => 
      array (
        'id' => 1202,
        'case' => 'first-letter',
        '*' => 'Message Wall Greeting',
        'canonical' => 'Message Wall Greeting',
      ),
      2000 => 
      array (
        'id' => 2000,
        'case' => 'first-letter',
        '*' => 'Board',
        'canonical' => 'Board',
      ),
      2001 => 
      array (
        'id' => 2001,
        'case' => 'first-letter',
        '*' => 'Board Thread',
        'subpages' => '',
        'canonical' => 'Board Thread',
      ),
      2002 => 
      array (
        'id' => 2002,
        'case' => 'first-letter',
        '*' => 'Topic',
        'canonical' => 'Topic',
      ),
    ),
  ),
)