PHP Marge 2 Array in single array

Question

all

In my aap, I need to short images based on Tag. Now in first array there is image tag and in second is url.

$results_tag array

Array
(
    [0] => stdClass Object
    (
        [meta_value] => Tag 2
    )        
)
Array
(
    [0] => stdClass Object
    (
        [meta_value] => Tag 1
    )

    [1] => stdClass Object
    (
        [meta_value] => Tag 3
    )  
)

$results_url array

 Array
    (
        [0] => stdClass Object
            (
                [meta_value] => formidable/madness_beach.jpg
            )

    )
    Array
    (
        [0] => stdClass Object
        (
            [meta_value] => formidable/adfish_beachchair1.jpg
        )

        [1] => stdClass Object
        (
            [meta_value] => formidable/madness_boat1.jpg
        )
)

Now, what i actually want is

Array
(
[Tag 2] => [formidable/madness_beach.jpg]
[Tag 1] => [formidable/adfish_beachchair1.jpg]
[Tag 3] => [formidable/madness_boat1.jpg]
)

So , using this i can short image based on tag.

I have tried

$results_tag = array_merge_recursive($results_tag,$results_url);

But not getting the output as i want.

Thanks In Advance!!

jgroenen · Accepted Answer · 2012-02-22 10:30:13Z

3

I assume the number of elements is known to be $N.

$results = array();
for ( $i = 0; $i < $N; ++$i ) $results[$results_tag[$i]->meta_value] = $results_url[$i]->meta_value;

answered Feb 22, 2012 at 10:30

jgroenen

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2 Comments

jgroenen Over a year ago

Also make sure that no two tags are the same, since you will then lose data.

Ajay Patel Over a year ago

Yep! i know that is the issue so i asked this one. I found same solun like yours stackoverflow.com/questions/6725954/…

Shiplu Mokaddim · Accepted Answer · 2012-02-22 11:53:43Z

2

This will do.

$result = array();
$len = count($results_tag);
while($len--) $result[$results_tag[$i]->meta_value] = $results_url[$i]->meta_value;

edited Feb 22, 2012 at 11:53

answered Feb 22, 2012 at 10:33

Shiplu Mokaddim

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Comments

Saiyam Patel · Accepted Answer · 2012-02-22 10:47:17Z

 <?php 

  $results_tag_one =  array(0 => array('meta_value' => 'Tag 2'));
  $results_tag_two =  array(0 => array('meta_value' => 'Tag 1'),1 => array('meta_value' => 'Tag 3'));
  $results_tag = array_merge($results_tag_one,$results_tag_two);

  $results_url_one =  array(0 => array('meta_value' => 'formidable/madness_beach.jpg'));
  $results_url_two =  array(0 => array('meta_value' => 'formidable/adfish_beachchair1.jpg'),1 => array('meta_value' => 'formidable/madness_boat1.jpg'));
  $results_url = array_merge($results_url_one,$results_url_two);

  $final = array();
  $i = 0;
  foreach ($results_url as $url_data){
    $final[$results_tag[$i]['meta_value']] = $results_url[$i]['meta_value'];
    $i++;
  }
  echo "<pre>";
  print_r($final);
  echo "</pre>";
  exit;

cheers

Eugen Rieck · Accepted Answer · 2012-02-22 10:36:27Z

1

function flatten($tags, $urls, &$result) {
  if (is_array($tags))
    while (sizeof($tags)>0) {
      $tagschld=array_shift($tags);
      $urlschld=array_shift($urls);
      flatten($tagschld, $urlschld, $result);
    }
  else $result[$tags->meta_value]=$urls->meta_value;
}

$result=array();
flatten($results_tag, $results_url, $result);
print_r($result);

answered Feb 22, 2012 at 10:36

Eugen Rieck

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Comments

Stelian Matei · Accepted Answer · 2012-02-22 10:41:33Z

1

As far as I know, there is no built-in function which transforms two array of objects into one associative array based on one property.

You could implement something like this assuming you have the correspondence between the array keys:

$results = array();
foreach($results_tag as $i => $item)
{
    if(is_array($item){
       foreach($item as $j => $value) {
          $results[$value->meta_value] = $results_url[$i][$j]->meta_value;
       }
    } else {
       $results[$value->meta_value] = $results_url[$i]->meta_value;
    }
}

edited Feb 22, 2012 at 10:41

answered Feb 22, 2012 at 10:34

Stelian Matei

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1 Comment

Stelian Matei Over a year ago

I updated the code to handle both cases: elements in the array, or elements in subarrays. Hope this works

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