CODEWITHSUNDEEP
phparrays
Aknorw
Aknorw

Reputation: 13

Add an array at the end of another array

I have to add some elements from an array into another array for a project.

Here's the deal: I have 2 arrays, from 2 tables of a database, which are named $stand and $signal.

$stand is made up of arrays:

$stand = [[id, name, width, length,...], [id, name, width, length,...], ...]

$signal is made up of arrays as well:

$signal = [[id, num, name, adress, ...], [id, num, name, adress, ...], ...]

Each entry of $stand matches with an entry of $signal: the id of an entry of $stand is equal to the number of elements in $signal.

For these entries, I'd like to add the content of the entry of $signal at the end of the entry of $stand.

Here's the code I used, but unfortunately it doesn't work:

foreach ($stand as $st) {
   foreach ($signal as $sig) {
      if ($st[0] == $sig[1]) {
         $st[]=$sig;
      }
   }
}

Upvotes: 1

Views: 548

Answers (5)

Paul
Paul

Reputation: 785

foreach ($stand as $key => $st) {
   foreach ($signal as $sig) {
      if ($st[0] == $sig[1]) {
         $stand[$key][]=$sig;
      }
   }
}

Upvotes: 1

Manish Jangir
Manish Jangir

Reputation: 5437

As I understand, you want something like this

$array1 = array(array('id'=>1,'name'=>'manish'),array('id'=>2,'name'=>'bhuvnesh'));

$array2 = array(array('id'=>1,'color'=>'red'),array('id'=>2,'color'=>'green'));

$newArray = array();

foreach($array1 as $key => $vals) {
    $id = $vals['id'];
    $color = $array2[$key]['color'];
    $newArray[] = array('id'=>$id, 'name'=>$vals['name'], 'color'=>$color);
}

echo '<pre>';
print_r($newArray);

This will return 

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => manish
            [color] => red
        )

    [1] => Array
        (
            [id] => 2
            [name] => bhuvnesh
            [color] => green
        )

)

Upvotes: 0

Praveen D
Praveen D

Reputation: 2377

Use array_merge function.

$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);

For more detail read here

Upvotes: 2

user1395612
user1395612

Reputation:

$st seems to be a copy of an element array, but not an element reference. So modifications you make to $st are lost. Thus you should precede $st with an ampersand to use it as a reference:

foreach($stand as &$st)

Upvotes: 0

Victor York
Victor York

Reputation: 1681

array_merge is the elegant way:

$a = array('a', 'b');
$b = array('c', 'd');
$merge = array_merge($a, $b); 
// $merge is now equals to array('a','b','c','d');

Doing something like:

$merge = $a + $b;
// $merge now equals array('a','b')

Will not work, because the + operator does not actually merge them. If they $a has the same keys as $b, it won't do anything.

Upvotes: 8

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