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  1. <?php
  2.  
  3. $pages = [
  4. 	[ 'page_id' => '1' ],
  5. 	[
  6. 		'page_id' => '2',
  7. 		'children' => [[
  8. 			[
  9. 				'page_id' => '10',
  10. 				'children' => [[
  11. 					[ 'page_id' => '12' ],
  12. 					[ 'page_id' => '13' ]
  13. 				]]
  14. 			],
  15. 			[ 'page_id' => '11' ]
  16. 		]]
  17. 	],
  18. 	[ 'page_id' => '4' ],
  19. 	[ 'page_id' => '3' ]
  20. ];
  21.  
  22. function removeUselessArrays($array) {
  23. 	$newArray = [];
  24.  
  25. 	foreach ($array as $key => $value) {
  26. 		if (is_array($value)) {
  27. 			if (array_keys($value) === [ 0 ]) {
  28. 				$newArray[$key] = removeUselessArrays($value[0]);
  29. 			} else {
  30. 				$newArray[$key] = removeUselessArrays($value);
  31. 			}
  32. 		} else {
  33. 			$newArray[$key] = $value;
  34. 		}
  35. 	}
  36.  
  37. 	return $newArray;
  38. }
  39.  
  40. echo "Before:" . PHP_EOL;
  41. print_r($pages);
  42.  
  43. echo "After:" . PHP_EOL;
  44. print_r(removeUselessArrays($pages));
Success #stdin #stdout 0.01s 52488KB
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stdin
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Standard input is empty
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Before:
Array
(
    [0] => Array
        (
            [page_id] => 1
        )

    [1] => Array
        (
            [page_id] => 2
            [children] => Array
                (
                    [0] => Array
                        (
                            [0] => Array
                                (
                                    [page_id] => 10
                                    [children] => Array
                                        (
                                            [0] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [page_id] => 12
                                                        )

                                                    [1] => Array
                                                        (
                                                            [page_id] => 13
                                                        )

                                                )

                                        )

                                )

                            [1] => Array
                                (
                                    [page_id] => 11
                                )

                        )

                )

        )

    [2] => Array
        (
            [page_id] => 4
        )

    [3] => Array
        (
            [page_id] => 3
        )

)
After:
Array
(
    [0] => Array
        (
            [page_id] => 1
        )

    [1] => Array
        (
            [page_id] => 2
            [children] => Array
                (
                    [0] => Array
                        (
                            [page_id] => 10
                            [children] => Array
                                (
                                    [0] => Array
                                        (
                                            [page_id] => 12
                                        )

                                    [1] => Array
                                        (
                                            [page_id] => 13
                                        )

                                )

                        )

                    [1] => Array
                        (
                            [page_id] => 11
                        )

                )

        )

    [2] => Array
        (
            [page_id] => 4
        )

    [3] => Array
        (
            [page_id] => 3
        )

)
https://ideone.com/Gw97jj
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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