Walk array recursively and print the path of the walk

Question

Can someone help me with some code or instructions on how to walk recursively an array and when reaching the last element print the full path to it? A simple echo will work

Answer 1

I found this solution, which also keeps into account if elements of the structure are arrays:

$file_contents=file_get_contents("data.json");
$json_dump=json_decode($file_contents); 
printPath($json_dump, '', "" ,"");

function printPath($the_array, $path, $prevType) {
// Parse all elements of a structure 
// and print full PHP path to each one.
    foreach($the_array as $key => $value)  {
        if(is_array($value)) {
            // Array element cannot be directly printed: process its items as     objects:
            printPath($value, $path  . $key , "array");
        } else {            
            if (!is_object($value))  { // If the element is not an object, it can be printed (it's a leaf)
                if(is_string($value)) { 
                    $finalValue = '"' . $value . '"'; 
                } else { 
                    $finalValue = $value;
                }
                if($prevType == "array") {
                    // If array element, add index in square brackets
                    echo($path  . "["  . $key . "] =  " .  $finalValue . "
");
                } else {
                    echo($path . $key  . " = " . $finalValue . "
");                     
                }   

            } else { // else store partial path and iterate:
                if($prevType == "array") {
                    // Path of array element must contain element index:  
                    printPath($value, $path . "["  . $key . "]->"  , "dummy");
                } else {
                    printPath($value, $path . $key . "->", "dummy");
                }           
            }
        }
    }
}

Example output:

status->connections->DSS-25->band = "X"
status->connections->DSS-25->endAt = "2019-11-20T20:40:00.000Z"
status->connections->DSS-25->startAt = "2019-11-20T12:40:00.000Z"
geometry[0]->obs[0]->name = "UDSC64"
geometry[0]->obs[0]->hayabusa2->azm = 90.34
geometry[0]->obs[0]->hayabusa2->alt = -20.51

In case anybody is interested, here it is the port to Javascript:

function iterate(obj, stack, prevType) {
    for (var property in obj) {
        if ( Array.isArray(obj[property]) ) {
            //console.log(property , "(L="  + obj[property].length + ") is an array  with parent ", prevType, stack);
            iterate(obj[property], stack  + property , "array");
        } else {
            if ((typeof obj[property] != "string")  && (typeof obj[property] != "number"))  {
                if(prevType == "array") {
                    //console.log(stack + "["  + property + "] is an object, item of " , prevType, stack);
                    iterate(obj[property], stack + "["  +property + "]." , "object");
                } else {
                    //console.log(stack +    property  , "is " , typeof obj[property] , " with parent ", prevType, stack );
                    iterate(obj[property], stack  + property + ".", "object");
                }   
            } else {
                if(prevType == "array") {
                    console.log(stack + "["  + property + "] =  "+  obj[property]);

                } else {
                    console.log(stack +    property  , " =  " ,  obj[property] );                       
                }   
            }
        }
    }
}

iterate(object, '', "File")