I'm getting an error when trying to use foreach on 3rd array

'{
  "prefix": "_country-",
  "countries": [
    {
      "code": "al",
      "name": "Albania",
      "cities": {
        "prefix": "_city-",
        "options": [
          {
            "code": "durres"
              },
          {
            "code": "tirana"
          }
        ]
      }
},
    {
      "code": "dz",
      "name": "Algeria",
      "cities": {
        "prefix": "_city-",
        "options": [
          {
            "code": "algiers"
          },
          {
            "code": "oran"
          }
        ]
      }
    }
  ]
}

My goal is to get those data above and expect it to loop until its last data using this code:

`foreach($countryarr1['countries'] as $countkey1 => $countname1){ ?> <br><br> <?php 
  foreach($countname1['cities'] as $cntrykey2 => $cntrys){
    foreach($cntrys['options'] as $optionskey1 => $optionsarr1){
      var_dump($optionsarr1);
    }
  }
}`

It returns this error

'Fatal error: Uncaught TypeError: Cannot access offset of type string on string in 
C:\xampp\htdocs\homepage\countries.php:25 Stack trace: #0 {main} thrown in 
C:\xampp\htdocs\homepage\countries.php on line 25'

Here is the line 25

Error on line 25

Am I missing something? By the way I'm working on a proxy dashboard for a website.

Here's proof that when I only had 2 arrays it had no problems:

foreach for 2 arrays

output with no errors

Now when I add another foreach on the 3rd array and so forth, there's the error. Here it is.

foreach for 3rd array

And the error error

CodePudding user response：

You can do that quite nicely with only 2 loops like this

$countryarr1 = json_decode($str, true);
#print_r($countryarr1);
foreach($countryarr1['countries'] as $countkey1 => $countname1){ ?> <br><br> <?php 
    foreach($countname1['cities']['options'] as $optionskey1 => $optionsarr1){
        var_dump($optionsarr1);
    }
}

RESULT

array(1) { 'code' => string(6) "durres" }
array(1) { 'code' => string(6) "tirana" }
array(1) { 'code' => string(7) "algiers" }
array(1) {'code' => string(4) "oran" }