array_merge making new array

Question

I have 2 arrays :

$a and $b

i want to merge this arrays to $res

here is my code:

$a = array("
    [0] => Array
        (
            [0] => 45677
            [ID] => 45677
            [1] => 10
            [post_author] => 10
            [2] => 2014-02-26 19:05:59
            [post_date] => 2014-02-26 19:05:59
            [3] => 2014-02-26 14:35:59
            [post_date_gmt] => 2014-02-26 14:35:59
        )");
$b= array("
    [0] => Array
        (
            [first_image] => http://gogole.com/a.jpg
        )");


$res = array_merge($a,$b);

OUTPUT :

Array
(
    [0] => 
    [0] => Array
        (
            [0] => 45677
            [ID] => 45677
            [1] => 10
            [post_author] => 10
            [2] => 2014-02-26 19:05:59
            [post_date] => 2014-02-26 19:05:59
            [3] => 2014-02-26 14:35:59
            [post_date_gmt] => 2014-02-26 14:35:59
        )
    [1] => 
    [0] => Array
        (
            [first_image] => http://gogole.com/a.jpg
        )
)

it should be something like this :

Array
(
    [0] => Array
        (
            [0] => 45677
            [ID] => 45677
            [1] => 10
            [post_author] => 10
            [2] => 2014-02-26 19:05:59
            [post_date] => 2014-02-26 19:05:59
            [3] => 2014-02-26 14:35:59
            [post_date_gmt] => 2014-02-26 14:35:59
            [first_image] => http://gogole.com/a.jpg
        )
    )

)

what is problem ?

and how can i fix it ?

The problem is that your "arrays" are not multi-dimensional arrays. They're an array with one long string in it...! — deceze
– deceze ♦, Commented Mar 19, 2014 at 19:10
sounds like you don't want array_merge() but you want array_push() — 13ruce1337
– 13ruce1337, Commented Mar 19, 2014 at 19:11
why would $res = array_merge($a[0],$b[0]); not be a correct option, just wondering...? — benomatis
– benomatis, Commented Mar 19, 2014 at 19:13
@webeno because he's not defining the multi-dimensional arrays properly, so there is only one element. You would essentially be making an array with two strings, which is not what he wants. — echolocation
– echolocation, Commented Mar 19, 2014 at 19:17
@echolocation I wasn't really considering his way of coding, based my answer merely on the assumption that he actually has multidimensional arrays... thanks for answering my question though! — benomatis
– benomatis, Commented Mar 19, 2014 at 19:20

Anonymous · Accepted Answer · 2014-03-19 20:42:58Z

4

You're not defining the arrays correctly. I have a feeling you used an outputted var_dump of someone's to define your array, but that is not for the purposes of using in code. It is for a easily understandable array. You could change this:

$b= array("
    [0] => Array
        (
            [first_image] => http://gogole.com/a.jpg
        )");

To this:

$b= array(array('first_image' => 'http://gogole.com/a.jpg'));

Also, you would need to do the same with the $a array.

Also, for it to function in the way that you want, you would need to use array_merge($a[0],$b[0]);.

edited Mar 19, 2014 at 20:42

answered Mar 19, 2014 at 19:11

Anonymous

12.1k7 gold badges37 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

user1853266 Over a year ago

it's not working , i got this error : Notice: Use of undefined constant first_image - assumed 'first_image'

Anonymous Over a year ago

You are using the code before my edit. Try the edited version.

user1853266 Over a year ago

it's still giving my output and not creating new array

Anonymous Over a year ago

I would need to see how you define $a.

Lucas · Accepted Answer · 2014-03-19 19:19:27Z

2

I am not sure how you are getting that output, it looks like the result from a mysql_fetch_array() as opposed to a mysql_fetch_assoc() which it seems like you are looking for. I just did the following without issue:

$a = array(
  'id' => '123123',
  'author' => 'Random Author',
  'date' => '2013-01-05'
);

$b = array(
  'first_image' => 'http://gogole.com/a.jpg'
);

$res = array_merge($a, $b);

echo '<pre>';
print_r($res);
echo '</pre>';

Result:

Array
(
    [id] => 123123
    [author] => Random Author
    [date] => 2013-01-05
    [first_image] => http://gogole.com/a.jpg
)

answered Mar 19, 2014 at 19:19

Lucas

513 bronze badges

Comments

4EACH · Accepted Answer · 2014-03-19 20:36:41Z

0

I fixed your syntax, you storage value as string Here you have Assoc arrays. Copy this code

$a = array("ID"=> 45677,
            "post_author" => 10,
            "post_date" => "2014-02-26 19:05:59",
            "post_date_gmt" => "2014-02-26 14:35:59"
        );
        $b= array("first_image" => "http://gogole.com/a.jpg");


$res = array_merge($a,$b);
var_dump($res);

Good Luck!

answered Mar 19, 2014 at 20:36

4EACH

2,1974 gold badges20 silver badges31 bronze badges

1 Comment

user1853266 Over a year ago

i write just simple example to explain a problem , i have many array so i must post IDs as arrays index !

Collectives™ on Stack Overflow

array_merge making new array

3 Answers 3

4 Comments

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

4 Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related