CODEWITHSUNDEEP
phparraysmultidimensional-array
peace_love
peace_love

Reputation: 6471

How can I find only keys from a multidimensional array that have a key as a child?

My code is finding all keys with a specific character from my multidimensional array:

<?
$array = ["farm"=>
              [
                "horse"=>
                 [
                  "rabbit"=>
                     [
                      "name"=> "alan",
                      "age"=> "21",
                      "size"=> "166",
                      "gender"=> "f"
                    ], 
              ]
           ]   
    ]; 

    function createList($array, $keySearch, $path=null) {
                  $result = [];
        foreach ($array as $key => $item) { 
            $basePath = $path === null ? $key : $path. "/" . $key;
            if (stripos($key, $keySearch) !== false)
                 $result[] = ['key' => $key, 'basePath' => $basePath];            
            if(is_array($item))
                 $result = array_merge($result, createList($item, $keySearch, $basePath));
        }
    return $result;
    }

    $keySearch = 'a';
    $res = createList($array, $keySearch);
    print_r($res);

https://eval.in/573212

My output:

Array
(
    [0] => Array
        (
            [key] => farm
            [basePath] => farm
        )

    [1] => Array
        (
            [key] => rabbit
            [basePath] => farm/horse/rabbit
        )

    [2] => Array
        (
            [key] => name
            [basePath] => farm/horse/rabbit/name
        )

    [3] => Array
        (
            [key] => age
            [basePath] => farm/horse/rabbit/age
        )

)

But I need only the keys, that have a key as a child. So in this case my result should be:

Array
(
    [0] => Array
        (
            [key] => farm
            [basePath] => farm
        )

    [1] => Array
        (
            [key] => rabbit
            [basePath] => farm/horse/rabbit
        )
)

Upvotes: 2

Views: 45

Answers (3)

xAqweRx
xAqweRx

Reputation: 1236

try changing if (stripos($key, $keySearch) !== false) to if (stripos($key, $keySearch) !== false && is_array($item))

Upvotes: 0

Murad Hasan
Murad Hasan

Reputation: 9583

May be this is what you are looking for, please check and let me know. Just check your item has childs or not by using is_array($item) in the if condition.

online Check

Just change the function: 

function createList($array, $keySearch, $path=null) {
    $result = [];
    foreach ($array as $key => $item) { 
        $basePath = $path === null ? $key : $path. "/" . $key;
        if (stripos($key, $keySearch) !== false && is_array($item)){
            $result[] = ['key' => $key, 'basePath' => $basePath];
        }       
        if(is_array($item))
            $result = array_merge($result, createList($item, $keySearch, $basePath));
    }
    return $result;
}

Upvotes: 1

Manjeet Barnala
Manjeet Barnala

Reputation: 2995

Use if(is_array($item)) after $basePath = $path === null ? $key : $path. "/" . $key; 

$array = ["farm"=>
              [
                "horse"=>
                 [
                  "rabbit"=>
                     [
                      "name"=> "alan",
                      "age"=> "21",
                      "size"=> "166",
                      "gender"=> "f"
                    ], 
              ]
           ]   
    ]; 

function createList($array, $keySearch, $path=null) {
              $result = [];
    foreach ($array as $key => $item) { 
        $basePath = $path === null ? $key : $path. "/" . $key;
        if(is_array($item))
        if (stripos($key, $keySearch) !== false)
             $result[] = ['key' => $key, 'basePath' => $basePath];            
        if(is_array($item))
             $result = array_merge($result, createList($item, $keySearch, $basePath));
    }
    return $result;
}

$keySearch = 'a';
$res = createList($array, $keySearch);
print_r($res);

This will give you 

Array
(
    [0] => Array
        (
            [key] => farm
            [basePath] => farm
        )

    [1] => Array
        (
            [key] => rabbit
            [basePath] => farm/horse/rabbit
        )

)

LIVE DEMO

Upvotes: 0

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