How to add multiple arrays to a subarray?

Question

I have the following three arrays of objects:

First Array: $array1

Array (
    [0] => Array (
            [id] => 1
            [name] => world
           )
)

Second Array: $array2

Array (
    [count] => 1
)

Third Array: $array3

Array (
    [KM] => 2
)

I want to add the associative elements from $array2 and $array3 into the subarray at $array1[0].

Desired output:

Array (
    [0] => Array
        (
            [id] => 1
            [name] => world
            [count] => 1
            [KM] => 2
        )
)

php.net/manual/en/function.array-merge.php should do exactly what you want — birdspider
– birdspider, Commented Aug 7, 2014 at 18:49
I think I can guess why, but we would need to see how you are trying to use it in order to know for sure. — Don't Panic
– Don't Panic, Commented Aug 7, 2014 at 18:52

Erlesand · Accepted Answer · 2014-08-07 18:58:43Z

2

This is how you would use array_merge()

<?php
    $array1 = array(array("id" => 1, "name" => "world")); 
    $array2 = array("KM" => 2); 
    $array3 = array("count" => 1); 

    print_r(array(array_merge($array1[0], $array2, $array3))); 
?>

Which would output:

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => world
            [KM] => 2
            [count] => 1
        )

)

edited Aug 7, 2014 at 18:58

answered Aug 7, 2014 at 18:52

Erlesand

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Comments

Fallen · Accepted Answer · 2014-08-07 18:58:50Z

2

array_merge is the function you've been looking for

Sample code:

$output_array[0] = array_merge($array1[0], $array2, $array3));
print_r($output_array);

edited Aug 7, 2014 at 18:58

answered Aug 7, 2014 at 18:49

Fallen

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2 Comments

Rolice Over a year ago

Direct array merge will not produce desired output.

Fallen Over a year ago

$array1[0] is another array, please check the updated answer(with a demo code) @Rolice

jh314 · Accepted Answer · 2014-08-07 18:58:01Z

1

This will get you the desired output:

<?php

$array1 = array(array("id" => 1, "name" => "world"));
$array2 = array("KM" => 2); 
$array3 = array("count" => 1); 

$array1[0] = array_merge($array1[0], $array2, $array3);
print_r($array1);
?>

answered Aug 7, 2014 at 18:58

jh314

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Comments

Havenard · Accepted Answer · 2014-08-07 18:52:47Z

0

array_merge() will merge arrays. Problem is, the structure of your $array1 differs from the others. You have an array inside an array. To produce the desired output as specified you would need this:

$array4 = array(
    0 => array_merge($array1[0], $array2, $array3)
);

But I believe you want something more like this:

$array4 = array_merge($array1[0], $array2, $array3);

answered Aug 7, 2014 at 18:52

Havenard

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Comments

RAHUL KUMAR · Accepted Answer · 2014-08-07 18:55:37Z

0

array array_merge ( array $array1 [, array $... ] ) Merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.

If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended.

Values in the input array with numeric keys will be renumbered with incrementing keys starting from zero in the result array.

answered Aug 7, 2014 at 18:55

RAHUL KUMAR

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