Validation in PHP form Without Using JavaScripts

//define variables and initialize with empty values

$nameErr = $addrErr = $emailErr = $howManyErr = $favFruitErr = "";

$name = $address = $email = $howMany = "";

$favFruit = array();

 

if ($_SERVER["REQUEST_METHOD"] == "POST") {

    if (empty($_POST["name"])) {

        $nameErr = "Missing";

    }

    else {

        $name = $_POST["name"];

    }

 

    if (empty($_POST["address"])) {

        $addrErr = "Missing";

    }

    else {

        $address = $_POST["address"];

    }

 

    if (empty($_POST["email"]))  {

        $emailErr = "Missing";

    }

    else {

        $email = $_POST["email"];

    }

 

    if (!isset($_POST["howMany"])) {

        $howManyErr = "You must select 1 option";

    }

    else {

        $howMany = $_POST["howMany"];

    }

 

    if (empty($_POST["favFruit"])) {

        $favFruitErr = "You must select 1 or more";

    }

    else {

        $favFruit = $_POST["favFruit"];

    }

}

// the HTML code starts here