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            [parent_category] => Array
                (
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                    [slug] => computer-technology
                    [name] => Computer and Technology
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Microsoft Excel
                            [slug] => microsoft-excel
                            [id] => 1805
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                )

        )

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

            [subcategories] => Array
                (
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                        (
                            [name] => ACT Math
                            [slug] => act-math
                            [id] => 1741
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                        (
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                            [slug] => algebra-1
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                        (
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                            [slug] => algebra-2
                            [id] => 1726
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                    [3] => Array
                        (
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                            [slug] => calculus
                            [id] => 1730
                        )

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                        (
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                            [slug] => geometry
                            [id] => 1727
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                        (
                            [name] => Linear Algebra
                            [slug] => linear-algebra
                            [id] => 1733
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                    [6] => Array
                        (
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                            [slug] => prealgebra
                            [id] => 1724
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                        (
                            [name] => Precalculus
                            [slug] => precalculus
                            [id] => 1728
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                        (
                            [name] => SAT Math
                            [slug] => sat-math
                            [id] => 1740
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                        (
                            [name] => Trigonometry
                            [slug] => trigonometry
                            [id] => 1729
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                )

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            [parent_category] => Array
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                    [slug] => science
                    [name] => Science
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            [subcategories] => Array
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                        (
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                            [slug] => biology
                            [id] => 1746
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                    [1] => Array
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                            [name] => Chemistry
                            [slug] => chemistry
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)