PHP 7.1 – Symmetric array destructuring

In this post, I will show you how you can use the new Symmetric array destructuring feature of PHP7.1 version. In the previous version of PHP, we used list method to destructure arrays for assignments.

The shorthand array syntax ([]) may now be used to destructure arrays for assignments (Including within foreach), as an alternative to the existing list() syntax, which is still supported.

Symmetric array destructuring

Symmetric array destructuring within foreach

$data = [
    [1, 'Tom'],
    [2, 'Fred'],
];

// list() style
foreach ($data as list($id, $name)) {
    // logic here with $id and $name
    var_dump($id,$name);
}

// [] style
foreach ($data as [$id, $name]) {
    // logic here with $id and $name
    var_dump($id,$name);
}

With named keys

$user = ['id' => 1, 'name' =>  'Tom'];
['id' => $user_id, 'name' => $name] = $user;
var_dump($user_id,$name);

// with foreach 
$users = [
   ['id' => 1, 'name' =>  'Tom'],
   ['id' => 2, 'name' =>  'Joe']
];
foreach ($users as ['id' => $user_id, 'name' => $name]) {
     var_dump($user_id,$name);
}

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