How to find an array from parent array?

Question

I am using below code to find an array inside parent array but it is not working that is retuning empty even though the specified key exits in the parent array

$cards_parent = $feedData['BetradarLivescoreData']['Sport']['Category']['Tournament']['Match'];
$cards = array();

foreach($cards_parent as $key => $card)
{
    if ($key === 'Cards')
    {
        $cards[] = $cards_parent[$key];
        break;
    }
}

Do you know any array function that will search parent array for specified key and if found it will create an array starting from that key?

It's hard to tell from your example what the issue is. Give a sample of what $cards_parent might look like. If you mean the key is at an unknown depth within the array, look into recursive iteration. — deceze
– deceze ♦, Commented Jun 4, 2010 at 6:49
Why is $cards an array? It seems that it will hold only one value anyway... — Felix Kling
– Felix Kling, Commented Jun 4, 2010 at 6:54

Community · Accepted Answer · 2023-11-20 22:45:59Z

1

you want array_key_exists()

takes in a needle (string), then haystack (array) and returns true or false.

in one of the comments, there is a recursive solution that looks like it might be more like what you want. https://www.php.net/manual/en/function.array-key-exists.php#94601

edited Nov 20, 2023 at 22:45

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answered Jun 4, 2010 at 6:46

helloandre

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Comments

GOsha · Accepted Answer · 2010-06-04 08:30:29Z

1

here you can use recursion:

function Recursor($arr)
{
 if(is_array($arr))
 {
  foreach($arr as $k=>$v)
  {
   if($k == 'Cards')
   {
     $_GLOBAL['cards'][] = $card;
   } else {
     Recursor($arr[$k]);
   }
  }
 }
}

$cards_parent = $feedData['BetradarLivescoreData']['Sport']['Category']['Tournament']['Match'];
$_GLOBAL['cards'] = array();
Recursor($cards_parent);

answered Jun 4, 2010 at 8:30

GOsha

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3 Comments

deceze Over a year ago

Uuuuh, $_GLOBAL... >_< You should really return instead.

GOsha Over a year ago

No. I shouldn`t. I need to pass all array. If return - recursion will be interrupted. $_Global is here to rememder finded values and to go to the end of array.

deceze Over a year ago

It is perfectly possible to return and merge values throughout recursive calls. All your recursive invocations return implicitly anyway. At least use a static variable if you have to.

halfer · Accepted Answer · 2018-02-02 12:28:26Z

0

Could you please put a print_r($feedData) up? I ran the below code

<?php
 $feedData = array('BetradarLivescoreData' => array('Sport' => array('Category' => array('Tournament' => array('Match' => array('Cards' => array('hellow','jwalk')))))));
 $cards_parent = $feedData['BetradarLivescoreData']['Sport']['Category']['Tournament']['Match'];
$cards = array();

 foreach($cards_parent as $key => $card)
 {
     if ($key === 'Cards')
     {
         $cards[] = $card;
         break;
     }
 }
 print_r($cards);

And it returned a populated array:

Array ( [0] => Array ( [0] => hellow [1] => jwalk ) )

So your code is correct, it may be that your array $feedData is not.

edited Feb 2, 2018 at 12:28

halfer

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answered Jun 4, 2010 at 8:22

Luke

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