Array
(
    [1760] => Array
        (
            [parent_category_id] => 1760
            [parent_category] => Array
                (
                    [id] => 1760
                    [slug] => english-reading
                    [name] => English and Reading
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Proofreading
                            [slug] => proofreading
                            [id] => 1767
                        )

                )

        )

    [1723] => Array
        (
            [parent_category_id] => 1723
            [parent_category] => Array
                (
                    [id] => 1723
                    [slug] => math
                    [name] => Math
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Algebra 1
                            [slug] => algebra-1
                            [id] => 1725
                        )

                    [1] => Array
                        (
                            [name] => Prealgebra
                            [slug] => prealgebra
                            [id] => 1724
                        )

                )

        )

    [1915] => Array
        (
            [parent_category_id] => 1915
            [parent_category] => Array
                (
                    [id] => 1915
                    [slug] => miscellaneous
                    [name] => Miscellaneous / Other
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Trumpet
                            [slug] => trumpet
                            [id] => 1791
                        )

                )

        )

    [1785] => Array
        (
            [parent_category_id] => 1785
            [parent_category] => Array
                (
                    [id] => 1785
                    [slug] => music
                    [name] => Music
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Ear Training
                            [slug] => ear-training
                            [id] => 1796
                        )

                    [1] => Array
                        (
                            [name] => French Horn
                            [slug] => french-horn
                            [id] => 1794
                        )

                    [2] => Array
                        (
                            [name] => General Music
                            [slug] => general-music
                            [id] => 1786
                        )

                    [3] => Array
                        (
                            [name] => Guitar
                            [slug] => guitar
                            [id] => 1788
                        )

                    [4] => Array
                        (
                            [name] => Music Production
                            [slug] => music-production
                            [id] => 1797
                        )

                    [5] => Array
                        (
                            [name] => Music Theory
                            [slug] => music-theory
                            [id] => 1787
                        )

                    [6] => Array
                        (
                            [name] => Piano
                            [slug] => piano
                            [id] => 1789
                        )

                    [7] => Array
                        (
                            [name] => Trombone
                            [slug] => trombone
                            [id] => 1793
                        )

                )

        )

)