Push elements from one array into rows of another array (one element per row)

Question

I need to push elements from one array into respective rows of another array.

The 2 arrays are created from $_POST and $_FILES and I need them to be associated with each other based on their indexes.

$array1 = [
    [123, "Title #1", "Name #1"],
    [124, "Title #2", "Name #2"],
];

$array2 = [
    'name' => ['Image001.jpg', 'Image002.jpg']
];

New Array

array (
  0 => 
  array (
    0 => 123,
    1 => 'Title #1',
    2 => 'Name #1',
    3 => 'Image001.jpg',
  ),
  1 => 
  array (
    0 => 124,
    1 => 'Title #2',
    2 => 'Name #2',
    3 => 'Image002.jpg',
  ),
)

The current code I'm using works, but only for the last item in the array.
I'm presuming by looping the array_merge function it wipes my new array every loop.

$i = 0;
$NewArray = array();
foreach ($OriginalArray as $value) {
    $NewArray = array_merge($value, array($_FILES['Upload']['name'][$i]));
    $i++;
}

How do I correct this?

W Kristianto · Accepted Answer · 2018-08-04 12:06:33Z

28

Use either of the built-in array functions:

array_merge_recursive or array_replace_recursive

http://php.net/manual/en/function.array-merge-recursive.php

edited Aug 4, 2018 at 12:06

W Kristianto

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answered Nov 20, 2012 at 22:07

wintondeshong

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1 Comment

mickmackusa Over a year ago

This vague hint of an answer is provably incorrect or needs to be explicitly demonstrated. Proof: 3v4l.org/5Hgf8 Voters, please be careful not to ruin Stack Overflow by voting up answers that do not work.

Jay Paroline · Accepted Answer · 2009-10-13 05:19:17Z

15

$i=0;
$NewArray = array();
foreach($OriginalArray as $value) {
    $NewArray[] = array_merge($value,array($_FILES['Upload']['name'][$i]));
    $i++;
}

the [] will append it to the array instead of overwriting.

answered Oct 13, 2009 at 5:19

Jay Paroline

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1 Comment

mickmackusa Over a year ago

$OriginalArray already has indexed keys. Just use those in the foreach instead of manually incrementing your own counter variable.

Marius · Accepted Answer · 2009-10-13 05:20:00Z

3

Using just loops and array notation:

$newArray = array();
$i=0;
foreach($arary1 as $value){
  $newArray[$i] = $value;
  $newArray[$i][] = $array2["name"][$i];
  $i++;
}

answered Oct 13, 2009 at 5:20

Marius

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Comments

mickmackusa · Accepted Answer · 2022-09-16 09:35:00Z

0

Modify rows by reference while you iterate. Because you have an equal number of rows and name values in your second array. Use the indexes from the first array to target the appropriate element in the second. Just push elements from the second array into the first.

Code: (Demo)

foreach ($array1 as $i => &$row) {
    $row[] = $array2['name'][$i];
}
var_export($array1);

answered Sep 16, 2022 at 9:35

mickmackusa♦

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