Array filter use key

$my_array = ['foo' => 1, 'hello' => 'world'];
$allowed  = ['foo', 'bar'];
$filtered = array_filter(
    $my_array,
    function ($key) use ($allowed) {
        return in_array($key, $allowed);
    },
    ARRAY_FILTER_USE_KEY
);

Source: stackoverflow.com

Filter value in array php return single value

?php
$data= [
    0 => [1, 'test1'],
    1 => [2, 'test2'],
    2 => [3, 'test3'],
];

$ids = array_map(function($item) {
    return $item[0];
}, $data);

var_dump($ids);

-2

Similar codes

0 vote265 views1 answer
Comment définir un délimiteur de fil d’Ariane personnalisé dans WooCommerce
PHP
0 vote198 views1 answer
Wordpress max post revision
PHP
1 vote190 views2 answers
Class name laravel
PHP Laravel
3 votes187 views3 answers
Array pop php
PHP
25 votes195 views4 answers
Start php server
PHP
0 vote248 views1 answer
Laravel collection min
PHP
8 votes188 views5 answers
Laravel route is current route
PHP
0 vote255 views1 answer
Get taxonomy term id from slug - WordPress
PHP Wordpress
0 vote207 views1 answer
If post checked category wordpress
PHP
0 vote189 views1 answer
Get current post categody id wp
PHP