PHP Turn value from multidimensional array into an array

Question

I'm getting an array from $json_a = json_decode($filecontent, true):

Array (
        [meta_titles] => Array ( 
                [0] => Just another site 
                [1] => Test test 
                [2] => This is a test
        )
        [tag_titles] => Array ( 
                [0] => Test 1 
                [1] => Value 2 
                [2] => String 3
        )
)

I would like to modify the array as following:

Array (
        [meta_titles] => Array ( 
                Just another site => Just another site 
                Test test  => Test test 
                This is a test => This is a test
        )
        [tag_titles] => Array ( 
                Test 1 => Test 1 
                Value 2  => Value 2 
                String 3 => String 3
        )
    )

So values become the keys. Would somebody have an idea?

EDIT: My code so far:

$json_a = json_decode($filecontent, true);

$newjson = array();
foreach($json_a as $category) {
    $newjson[$category] = array_combine(array_values($category), $category);
}                           
$json = json_encode($newjson, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);

Thanks a lot

Euh your link brings me to "What does “1” mean at the end of a php print_r statement?" which has nothing to do with the question. — saasmaster
– saasmaster, Commented Apr 3, 2016 at 16:29
Wups yes, somehow I didn't copied the correct link. I mean this one: stackoverflow.com/q/5422955/3933332 just use the same subArray for keys and values. — Rizier123
– Rizier123, Commented Apr 3, 2016 at 16:30

RomanPerekhrest · Accepted Answer · 2016-04-03 17:35:05Z

3

Solution using array_combine and array_values functions. To change array value in place mark it as reference with &:

$json = [ 
    'meta_titles' => [ 0 => 'Just another site' , 1 => 'Test test' , 2 => 'This is a test'],
    'tag_titles' => [ 0 => 'Test 1' , 1 => 'Value 2' , 2 => 'String 3']    
];

foreach($json as &$category) {
    $category = array_combine(array_values($category), $category);
}

$json = json_encode($json, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);

print_r($json);

The output:

{
    "meta_titles": {
        "Just another site": "Just another site",
        "Test test": "Test test",
        "This is a test": "This is a test"
    },
    "tag_titles": {
        "Test 1": "Test 1",
        "Value 2": "Value 2",
        "String 3": "String 3"
    }
}

edited Apr 3, 2016 at 17:35

answered Apr 3, 2016 at 16:26

RomanPerekhrest

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13 Comments

RomanPerekhrest Over a year ago

update your question according to this condition "there are other array names in it.", update the expected output, and I will extend my solution for you

RomanPerekhrest Over a year ago

@GuilVII, each parent key should be renamed to meta_titles , right (it's in your example)?

RomanPerekhrest Over a year ago

do you want to get same arrays with string keys but empty values?

RomanPerekhrest Over a year ago

wait, what does mean "need both"? the values are either filled or empty, or you want to mix up filling values randomly?

RomanPerekhrest Over a year ago

I would say that it should be a new question in SO. In that case, there must exist some preconditions, depending on which condition, I should decide which value would be empty, and which - should be filled

|

Indrasis Datta · Accepted Answer · 2016-04-03 16:05:39Z

0

Try this:

$array = array (
    'meta_titles' => array ( 
            0 => 'Just another site',
            1 => 'Test test' ,
            2 => 'This is a test'
    )
);

$new_array['meta_titles'] = array();

foreach($array['meta_titles'] as $v) {
   $new_array['meta_titles'][$v] = $v;
}
echo "<pre>";
print_r($new_array);

This gives:

Array
(
 [meta_titles] => Array
    (
        [Just another site] => Just another site
        [Test test] => Test test
        [This is a test] => This is a test
    )

)

Hope this helps.

answered Apr 3, 2016 at 16:05

Indrasis Datta

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1 Comment

saasmaster Over a year ago

Thanks for your answer. meta_title is supposed to be dynamic though...I tried: foreach($json_a as $category) { foreach($category as $string){ $json_a[$category][$string] = $string; } but it's not changing the key... }

Naumov · Accepted Answer · 2016-04-03 16:20:21Z

0

You can try. reset($youArr); for get array like this

{ 
  Array {
          0 =》title
          1=》 description
           2 =》keywords
           }
}

And how to you can use array don't know keys?

answered Apr 3, 2016 at 16:20

Naumov

1,1879 silver badges22 bronze badges

2 Comments

saasmaster Over a year ago

Key is supposed to be equal to the value key => key. So json encode returns "Value":"Value".

Naumov Over a year ago

@GuilVll if return 0,1,2. I can use this jast res[0] if value = value I need use loop for get each element...

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