$nameArray = [
        "first_name" => "Saiful", 
        "last_name" => "Jamal", 
        "age" => 32,
        "contact_number" => +8801677729892,
        "address" => [
            'present_address' => "32 Nowabganj Raod, Lalbagh, Dhaka 1211",
            'permanent_address' => "Furshail, Taltola, Malkhanagar, Munshiganj",
        ],
        ];

    echo $nameArray["first_name"]. $nameArray["last_name"]. $nameArray["age" ] . '<br/>';
    echo $nameArray["last_name"] . '<br/>';
    echo $nameArray["age" ] . '<br/>';


    print_r($nameArray['address']['permanent_address']);