Adding array to existing array without invoking a new key

Question

I'm building a 3 page submission form, and I'd quite like all of the $_POST results to be stored in a single session variable.

So page 1 starts by setting up the array and adding the first lot of post data:

$_SESSION['results'] = array();
$_SESSION['results'] = $_POST // first lot of post data

This works great and returns an array like:

Array
(
  [name] => bob
  [address] => 1 foobar way
  [age] => 100
)

So when I get the resuts from page 2, I want to simply append them to the existing array without invoking a new array+key

array_push($_SESSION['results'], $_POST); //second lot of post data

To get something like this:

Array
(
  [name] => bob
  [address] => 1 foobar way
  [age] => 100
  [job] => rubbish php dev
  [salary] => 1000
)

But instead I get:

Array
(
  [name] => bob
  [address] => 1 foobar way
  [age] => 100
  [0] => Array
    (
      [job] => rubbish php dev
      [salary] => 1000
    )
)

Even more annoying is that I'm sure I had this working properly before I tweaked the code. What am I doing wrong?

you are searching for array_merge

ITroubs
– ITroubs

2013-03-20 13:58:06 +00:00
Commented Mar 20, 2013 at 13:58 — ITroubs
– ITroubs, Commented Mar 20, 2013 at 13:58

jeroen · Accepted Answer · 2013-03-20 14:03:45Z

8

You can also use the + operator:

$combined = $_SESSION['results'] + $_POST;

answered Mar 20, 2013 at 14:03

jeroen

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2 Comments

James Over a year ago

Thanks for that. Any idea if that has less overhead than using the array_merge function?

jeroen Over a year ago

@user2189903 I would certainly guess so, but you would have to benchmark to be sure.

juco · Accepted Answer · 2013-03-20 13:58:04Z

4

array_merge() is the function you're after.

answered Mar 20, 2013 at 13:58

juco

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1 Comment

James Over a year ago

What a fraggle rock I am! I had array_merge but changed it to array_push. Thanks for the quick responses guys.

believe me · Accepted Answer · 2013-03-20 13:58:42Z

1

array_merge() is your answer see http://php.net/manual/en/function.array-merge.php

answered Mar 20, 2013 at 13:58

believe me

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Comments

ulentini · Accepted Answer · 2013-03-20 14:00:53Z

0

You have to use array_merge(), look at this: array_merge()

answered Mar 20, 2013 at 14:00

ulentini

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