Combining PHP array by index

Question

I have the following two arrays. I need a way in PHP to combine them together so that the values at index[i] from both arrays are added to the same index in the final array.

Array 1

[0] => '123456'
[1] => '654123'
[2] => '987456'
[3] => '489522'
[4] => '014779'

Array 2

[0] => 'feature'
[1] => 'promo'
[2] => 'other'
[3] => 'start'
[4] => 'end'

Final Array I need

[0] => ['123456', 'feature']
[1] => ['654123', 'promo']
[2] => ['987456', 'other']
[3] => ['489522', 'start']
[4] => ['014779', 'end']

Jon · Accepted Answer · 2013-09-06 15:34:07Z

10

By far the easiest way is to use array_map:

$result = array_map(null, $array1, $array2));

See it in action.

answered Sep 6, 2013 at 15:34

Jon

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1 Comment

David Barker Over a year ago

And the most elegant... :)

Explosion Pills · Accepted Answer · 2013-09-06 15:32:06Z

1

foreach ($array1 as $index => $value1) {
    $finalArray[$index] = array($value1, $array2[$index]);
}

answered Sep 6, 2013 at 15:32

Explosion Pills

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2 Comments

PDev Over a year ago

First answer? Mine was earlier and more detailed!

Jon Over a year ago

@PDev: Your answer has three code snippets, only the second of which works as intended. The other two just detract from its value.

PDev · Accepted Answer · 2013-09-06 15:30:46Z

0

As both have a numeric key, you can do it with foreach:

foreach ($array2 as $key => $value) {
    $finalArray[$value] = $array1[$key];
}

It's a simple solution, but it should work. It just gets each value of the second array and puts it into the final array.

Or, if you need a number in the final array also:

foreach ($array2 as $key => $value) {
    $finalArray[$key] = array($value, $array1[$key]);
}

Or, the easiest way is to just use the array_merge function:

$finalArray = array_merge($array1, $array2);

Manual here.

Hope it helps you.

answered Sep 6, 2013 at 15:30

PDev

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Comments

Gadoma · Accepted Answer · 2013-09-07 04:30:42Z

0

Try this snippet :)

 $array_combined = array();
 foreach($array1 as $key=>$value)
 {
    $array_combined[$key] = array($array1[$key], $array2[$key]); 
 }

edited Sep 7, 2013 at 4:30

answered Sep 6, 2013 at 15:32

Gadoma

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