How can I get the "path" of a key in a multidimensional array?

peace_love Published at Dev

peace_love

I have a multidimensional array:

$array = ["farm"=>
              [
                "horse"=>
                 [
                  "horseman"=>
                     [
                      "fred1"=>  "fred1",
                      "fred2"=> "fred2",
                      "fred3"=>"fred3",
                      "fred4"=>  "fred4"
                    ],
                 "horseman2"=>
                    ["john"=> "john"]
                  ]  
              ]
    ];

And I am searching in this array for a specific key:

    function findKey($array, $keySearch) {
    foreach ($array as $key => $item) {
      $basePath = $basePath === null ? $key : $basePath. "/" . $key;
        if (stripos($key, $keySearch) !== false){
        echo "<li>Path:".$basePath."</li>"; 
            echo "<li>".$key."</li>";
         }   
        if (is_array($item))
           findKey($item, $keySearch); 
    }
}

findKey($array, 'horse');

What I need is simply the "paths" of my resulted keys.

But my result is:

Path:horse

horse

Path:horseman

horseman

https://eval.in/564230

I tried so many ways, but I cannot achieve what I need :(

Here some examples:

 findKey($array, 'horse');

Path:farm

horse

Path:farm/horse

horseman

Path:farm/horse

horseman2

findKey($array, 'horseman');

Path:farm/horse

horseman

Path:farm/horse

horseman2

findKey($array, 'horseman2');

Path:farm/horse

horseman2

Murad Hasan

Try this function

Check the Script online Script.

Because you call the same function again and again, so you lost the value of basepath. So pass this every time you call the function.

function findKey($array, $keySearch, $basePath) {
    $basePath2 = '';
    foreach ($array as $key => $item) {
        $basePath = ($basePath == "") ? $key : $basePath. "/" . $key;
        if($key == $keySearch){
            if(is_array($item)){
                foreach($item as $key2 => $value){
                    $basePath2 = ($basePath2 == "") ? $key : $basePath2. "/" . $key;
                    echo "<li>Path:".$basePath."</li>"; 
                    echo "<li>".$key2."</li>";
                }
            }           
            break;
        }else{
            if(is_array($item)){
                foreach($item as $key3 => $value3){
                    echo "<li>Path:".$basePath."</li>";
                    echo "<li>".$key3."</li>";
                }               
            }
        }

        if(is_array($item))
            findKey($item, $keySearch, $basePath);
    }
}
findKey($array, 'horse', '');

Result