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Groups > comp.lang.php > #18733

Re: convert array keys to paths

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On 6/28/2021 6:57 AM, alex wrote:
> Look at this array
> 
> array (
>    'a' =>
>    array (
>      'b1' =>
>      array (
>        'c1' => 1,
>        'c2' => 2,
>        'c3' => 3,
>      ),
>      'b2' =>
>      array (
>        'c' => 4,
>      ),
>    ),
> )
> 
> You can convert it to
> 
> array (
>    'a/b1/c1' => 1,
>    'a/b1/c2' => 2,
>    'a/b1/c3' => 3,
>    'a/b2/c' => 4,
> )
> 
> Possibly without using a complex set of instructions:
> foeach, array_map (), etc.

A little bit of complexity may be needed.

:-)

I came up with:

function pathjoin_help($o, $elms, &$res) {
     if(is_int($o)) {
         $res[implode('/', $elms)] = $o;
     } else if(is_array($o)) {
         $elms[] = null;
         foreach($o as $pathelm => $value) {
             $elms[count($elms)-1] = $pathelm;
             pathjoin_help($value, $elms, $res);
         }
     } else {
         die("Houston we have a problem");
     }
}

function pathjoin($a) {
     $res = array();
     pathjoin_help($a, array(), $res);
     return $res;
}

Arne

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convert array keys to paths alex <1j9448a02@lnx159sneakemail.com.invalid> - 2021-06-28 12:57 +0200
  Re: convert array keys to paths Arne Vajhøj <arne@vajhoej.dk> - 2021-07-23 21:14 -0400
    Re: convert array keys to paths alex <1j9448a02@lnx159sneakemail.com.invalid> - 2021-07-24 09:06 +0200
      Re: convert array keys to paths Arne Vajhøj <arne@vajhoej.dk> - 2021-07-24 20:36 -0400
        Re: convert array keys to paths alex <1j9448a02@lnx159sneakemail.com.invalid> - 2021-07-25 12:50 +0200
          Re: convert array keys to paths He Llo <ya12983@mail.com> - 2021-08-05 05:25 -0700

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