PHP Find last key of associative multidimensional array

Question

This is what I have tried:

foreach ($multiarr as $arr) {
   foreach ($arr as $key=>$val) {
      if (next($arr) === false) {
         //work on last key
      } else {
         //work
      }
   }
}

After taking another look, I think next is being used wrong here, but I am not sure what to do about it.

Is it possible to see if I'm on the last iteration of this array?

Answer 1

$lastkey = array_pop(array_keys($arr));
$lastvalue = $arr[$lastkey];

If you want to use it in a loop, just compare $lastkey to $key

Answer 2

You will need to keep a count of iterations and check it against the length of the array you are iterating over. The default Iterator implementation in PHP does not allow you to check whether the next element is valid -- next has a void return and the api only exposes a method to check whether the current position is valid. See here http://php.net/manual/en/class.iterator.php . To implement the functionality you are thinking about you would have to implement your own iterator with a peek() or nextIsValid() method.

Answer 3

Try this:

foreach ($multiarr as $arr) {
   $cnt=count($arr);
   foreach ($arr as $key=>$val) {
      if (!--$cnt) {
         //work on last key
      } else {
         //work
      }
   }
}

Answer 4

See below url i think it help full to you:-

How to get last key in an array?

How to get last key in an array?

Update:

<?php

$array = array(
    array(
    'first' => 123,
    'second' => 456,
    'last' => 789),
    array(
    'first' => 123,
    'second' => 456,
    'last_one' => 789),
);


foreach ($array as $arr) {

    end($arr);         // move the internal pointer to the end of the array
    $key = key($arr);  // fetches the key of the element pointed to by the internal pointer
    var_dump($key);

}

output:

string(4) "last" string(4) "last_one" 

Answer 5

This function (in theory, I haven't tested it) will return the last and deepest key in a multidemnsional associative array. Give I a run, I think you'll like it.

function recursiveEndOfArrayFinder($multiarr){

    $listofkeys = array_keys($multiarr);
    $lastkey = end($listofkeys);
    if(is_array($multiarr[$lastkey])){
        recursiveEndOfArrayFinder($multiarr[$lastkey]);
    }else{
    return $lastkey;
    }
}