siang all.. ada yg tau cara membuat array baru hasil filter

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Demo</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css"/>
</head>
<body>

<?php
//sample
$data1 = '["a1","a3"]';
$data2 = '[
    {
        "code" : "a1",
        "name" : "aaa"
    }, {
        "code" : "a2",
        "name" : "bbb"
    }, {
        "code" : "a3",
        "name" : "ccc"
    }
]';


$array1 = json_decode( $data1, true );
$array2 = json_decode( $data2, true );
$array3=[];

echo "<pre class='bg-primary p-2 text-light'>";
print_r($array1);
echo "</pre>";

echo "<pre class='bg-warning p-2'>";
print_r($array2);
echo "</pre>";

foreach( $array2 as $arr2 ) {
    foreach( $array1 as $arr1 ) {
        if( $arr2['code'] == $arr1 ){
            $array3[] = $arr2;
        }
    }
}

echo "<pre class='bg-info p-2'>";
print_r($array3);
echo "</pre>";
?>

</body>
</html>