how to lookup value object php

function lookup($array, $key) {

    //loop through all values in array
    foreach($array as $values) {

        //if 'key' value matches `$key`, return 'value' value.
        if($values['key'] == $key) {
            return $values['value'];
        }

    }

    //if nothing has been returned, return empty string
    return "";
}

$fruit = json_decode($fruit, true);
lookup($fruit, 'key');

$array = [
    'clothes' => 't-shirt',
    'size'    => 'medium',
    'color'   => 'blue',
];
 
extract($array);
 
echo("$clothes $size $color"); // t-shirt medium blue