PHP Print indefinite categories tree

Question

I'm trying to print list of categories with indefinite subcategories.

Example:

    [
        [
            'categoryName' => 'Category1',
            'categoryUrl' => 'category-1',
            'subcategories' => [
                [
                    'categoryName' => 'Subcategory 1',
                    'categoryUrl' => 'sucbategory-1',
                    'subcategories' => [
                        [
                            'categoryName' => 'Subcategory subcategory 1',
                            'categoryUrl' => 'sucbategory-subcategory-1',
                            'subcategories' => [
                                [
                                    '....'
                                ]
                            ]
                        ]
                    ],
                    [
                        'categoryName' => 'Subcategory 2',
                        'categoryUrl' => 'sucbategory-12',
                    ]
                ]
            ]
        ]
    ]

I was trying it with foreach inside foreach, etc... Then I realised I don't know how many levels category tree will have.

Category1->Subcategory1->Subcategory Subcategory1-> Subcategory ... 1-> ??

Possible duplicate of PHP recursion: How to create a recursion in php — yivi
– yivi, Commented Oct 27, 2017 at 9:12

Oleg Loginov · Accepted Answer · 2017-10-27 08:32:16Z

0

This is called a recursion. The idea is like this:

function printLeafs($node){
  echo $node->title;

  $leafs = getLeafs($node);
  foreach ($leafs as $leaf){
    printLeafs($leaf);
  }
}

answered Oct 27, 2017 at 8:32

Oleg Loginov

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nithinTa · Accepted Answer · 2017-10-27 09:10:27Z

0

This will print all using recursion.

function recurse($array) {

    foreach( $array as $one ) {
       echo $one['categoryName'] . '->' ;
       echo $one['categoryUrl'] . '->' ;

       if( isset($one['subcategories']) ) {
        if( is_array($one['subcategories'])) {
           recurse($one['subcategories']) ;
       }


       }
    }
};

recurse($array);

But in your code I've noted a problem, the following looks misplaced. In this case you are having categoryName not having a parent subcategories. If that a typo the above will work. Otherwise it wont.

'categoryName' => 'Subcategory 2',
'categoryUrl' => 'sucbategory-12',

edited Oct 27, 2017 at 9:10

answered Oct 27, 2017 at 9:03

nithinTa

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