How to concatenate two arrays using PHP?

Question

I have two arrays:

$browser = array("firefox", "opera", "edge");
$version = array("10", "12", "14");

I want to concatenate them such a way that the final array should be:

array(0=>array("name"=>"firefox", "version"=>"10"), 1=>array("name"=>"opera", "version"=>"12"), 2=>array("name"=>"edge", "version"=>"14"));

The code can contain any builtin or user defined function. I have tried using:

$browser = array("firefox","opera","edge");
$version = array("10","12","14");
foreach($browser as $key=>$values){
  if(!isset($array)){
    $array = array("name"=>$browser[$key],"version"=>$version[$key]);
  }else{
    $array = array($array,array("name"=>$browser[$key],"version"=>$version[$key]));
  }
}
print_r($array);

And the output I got was:

Array ( [0] => Array ( [0] => Array ( [name] => firefox [version] => 10 ) [1] => Array ( [name] => opera [version] => 12 ) ) [1] => Array ( [name] => edge [version] => 14 ) )

Also note that this code is in PHP and should work for at least 10 arrays length data.

Just in case these separate arrays are coming from an HTML form post (as they often are in questions like this) you can name the inputs so that $_POST already has the final array you're trying to get. — Don't Panic, Feb 18 '20 at 19:06

AbraCadaver · Accepted Answer · 2020-02-18T19:24:10.253

4

I would just map the arrays:

$result = array_map(function($b, $v) {
                        return ['browser' => $b, 'version' => $v];
                    }, $browser, $version);

You can also use an array for dynamic keys:

$keys = ['browser', 'version'];
$result = array_map(function($b, $v) use($keys) {
                        return array_combine($keys, [$b, $v]);
                    }, $browser, $version);

However with your code just use the first format in the if and dynamically append []:

foreach($browser as $key=>$values){
    $array[] = array("name"=>$browser[$key],"version"=>$version[$key]);
}

edited Feb 18 '20 at 19:24

answered Feb 18 '20 at 18:37

AbraCadaver

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Reminded me of https://stackoverflow.com/questions/2815162/is-there-a-php-function-like-pythons-zip, but that doesn't include the keys. – Nigel Ren Feb 18 '20 at 18:43

score 0 · Answer 2 · answered Feb 18 '20 at 18:35

0

$result = array();
for ($i=0; $i<count($browser); $i++) {
  $result[] = array($browser[$i], $version[$i]); 
}
return $result;

Very simple - just loop through the one array and use indexes.

answered Feb 18 '20 at 18:35

craigmj

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How to concatenate two arrays using PHP?

2 Answers2