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            [parent_category] => Array
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                    [slug] => computer-technology
                    [name] => Computer and Technology
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            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Microsoft Excel
                            [slug] => microsoft-excel
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                )

        )

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            [parent_category] => Array
                (
                    [id] => 1880
                    [slug] => engineering
                    [name] => Engineering
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Civil Engineering
                            [slug] => civil-engineering
                            [id] => 1883
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                    [1] => Array
                        (
                            [name] => Mechanical Engineering
                            [slug] => mechanical-engineering
                            [id] => 1881
                        )

                )

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

            [subcategories] => Array
                (
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                        (
                            [name] => ACT Math
                            [slug] => act-math
                            [id] => 1741
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                    [1] => Array
                        (
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                            [slug] => algebra-1
                            [id] => 1725
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                        (
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                            [slug] => algebra-2
                            [id] => 1726
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                        (
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                            [slug] => calculus
                            [id] => 1730
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                        (
                            [name] => Differential Equations
                            [slug] => differential-equations
                            [id] => 1731
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                        (
                            [name] => Elementary Math
                            [slug] => elementary-math
                            [id] => 1743
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                    [6] => Array
                        (
                            [name] => Prealgebra
                            [slug] => prealgebra
                            [id] => 1724
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                        (
                            [name] => Precalculus
                            [slug] => precalculus
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                        (
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                            [slug] => sat-math
                            [id] => 1740
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                            [slug] => trigonometry
                            [id] => 1729
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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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                            [name] => Physics
                            [slug] => physics
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)