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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 TXT format, set format=txt.
See the 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
                            [*] => 
                            [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
                            [*] => Openitware
                            [subpages] => 
                            [canonical] => Project
                        )

                    [5] => Array
                        (
                            [id] => 5
                            [case] => first-letter
                            [*] => Openitware talk
                            [subpages] => 
                            [canonical] => Project talk
                        )

                    [6] => Array
                        (
                            [id] => 6
                            [case] => first-letter
                            [*] => File
                            [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
                            [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
                            [canonical] => Category
                        )

                    [15] => Array
                        (
                            [id] => 15
                            [case] => first-letter
                            [*] => Category talk
                            [subpages] => 
                            [canonical] => Category talk
                        )

                    [100] => Array
                        (
                            [id] => 100
                            [case] => first-letter
                            [*] => DONATE
                            [canonical] => DONATE
                        )

                    [101] => Array
                        (
                            [id] => 101
                            [case] => first-letter
                            [*] => DONATE talk
                            [canonical] => DONATE talk
                        )

                    [102] => Array
                        (
                            [id] => 102
                            [case] => first-letter
                            [*] => DV Unit CMS
                            [canonical] => DV Unit CMS
                        )

                    [103] => Array
                        (
                            [id] => 103
                            [case] => first-letter
                            [*] => DV Unit CMS talk
                            [canonical] => DV Unit CMS talk
                        )

                    [104] => Array
                        (
                            [id] => 104
                            [case] => first-letter
                            [*] => GoInterns
                            [canonical] => GoInterns
                        )

                    [105] => Array
                        (
                            [id] => 105
                            [case] => first-letter
                            [*] => GoInterns talk
                            [canonical] => GoInterns talk
                        )

                    [106] => Array
                        (
                            [id] => 106
                            [case] => first-letter
                            [*] => Internship2Career
                            [canonical] => Internship2Career
                        )

                    [107] => Array
                        (
                            [id] => 107
                            [case] => first-letter
                            [*] => Internship2Career talk
                            [canonical] => Internship2Career talk
                        )

                    [150] => Array
                        (
                            [id] => 150
                            [case] => first-letter
                            [*] => Speech
                            [canonical] => Speech
                        )

                    [151] => Array
                        (
                            [id] => 151
                            [case] => first-letter
                            [*] => Speech talk
                            [canonical] => Speech talk
                        )

                    [152] => Array
                        (
                            [id] => 152
                            [case] => first-letter
                            [*] => Hapinoy
                            [canonical] => Hapinoy
                        )

                    [153] => Array
                        (
                            [id] => 153
                            [case] => first-letter
                            [*] => Hapinoy talk
                            [canonical] => Hapinoy talk
                        )

                    [154] => Array
                        (
                            [id] => 154
                            [case] => first-letter
                            [*] => Speech Lab
                            [canonical] => Speech Lab
                        )

                    [155] => Array
                        (
                            [id] => 155
                            [case] => first-letter
                            [*] => Speech Lab talk
                            [canonical] => Speech Lab talk
                        )

                    [156] => Array
                        (
                            [id] => 156
                            [case] => first-letter
                            [*] => Member Directory
                            [canonical] => Member Directory
                        )

                    [157] => Array
                        (
                            [id] => 157
                            [case] => first-letter
                            [*] => Member Directory talk
                            [canonical] => Member Directory talk
                        )

                    [158] => Array
                        (
                            [id] => 158
                            [case] => first-letter
                            [*] => Tire Service
                            [canonical] => Tire Service
                        )

                    [159] => Array
                        (
                            [id] => 159
                            [case] => first-letter
                            [*] => Tire Service talk
                            [canonical] => Tire Service talk
                        )

                    [160] => Array
                        (
                            [id] => 160
                            [case] => first-letter
                            [*] => Food Material Costing
                            [canonical] => Food Material Costing
                        )

                    [161] => Array
                        (
                            [id] => 161
                            [case] => first-letter
                            [*] => Food Material Costing talk
                            [canonical] => Food Material Costing talk
                        )

                    [162] => Array
                        (
                            [id] => 162
                            [case] => first-letter
                            [*] => SpEAK
                            [canonical] => SpEAK
                        )

                    [163] => Array
                        (
                            [id] => 163
                            [case] => first-letter
                            [*] => SpEAK talk
                            [canonical] => SpEAK talk
                        )

                    [164] => Array
                        (
                            [id] => 164
                            [case] => first-letter
                            [*] => Keeper
                            [canonical] => Keeper
                        )

                    [165] => Array
                        (
                            [id] => 165
                            [case] => first-letter
                            [*] => Keeper talk
                            [canonical] => Keeper talk
                        )

                    [166] => Array
                        (
                            [id] => 166
                            [case] => first-letter
                            [*] => Voyager
                            [canonical] => Voyager
                        )

                    [167] => Array
                        (
                            [id] => 167
                            [case] => first-letter
                            [*] => Voyager talk
                            [canonical] => Voyager talk
                        )

                    [168] => Array
                        (
                            [id] => 168
                            [case] => first-letter
                            [*] => comp730
                            [canonical] => comp730
                        )

                    [169] => Array
                        (
                            [id] => 169
                            [case] => first-letter
                            [*] => comp730
                            [canonical] => comp730
                        )

                    [274] => Array
                        (
                            [id] => 274
                            [case] => first-letter
                            [*] => Widget
                            [canonical] => Widget
                        )

                    [275] => Array
                        (
                            [id] => 275
                            [case] => first-letter
                            [*] => Widget talk
                            [subpages] => 
                            [canonical] => Widget talk
                        )

                )

        )

)