Untitled

<?php
require("settings/config.php");
require("settings/dbconnect.php");

if(isset($_POST["+2ale"])) {
   $rs = $con->query("SELECT `Name`, `LifeExpectancy` FROM `world_Country` WHERE `Continent` = 'Africa' AND `GovernmentForm` = 'Republic' ORDER BY `Name` DESC");

    //update rows with +2
    while($row = $rs->fetch_object()) {
        $lifeexp = $row->LifeExpectancy;
        $newlife = $lifeexp + 2;
        $name = $row->Name;

        $con->query("UPDATE `world_Country` SET `LifeExpectancy` = '$newlife' WHERE `Name` = '$name'") or die("unable");
    }
} elseif (isset($_POST["-2ale"])) {
    $rs = $con->query("SELECT `Name`, `LifeExpectancy` FROM `world_Country` WHERE `Continent` = 'Africa' AND `GovernmentForm` = 'Republic' ORDER BY `Name` DESC");

    //update rows with -2
    while($row = $rs->fetch_object()) {
        $lifeexp = $row->LifeExpectancy;
        $newlife = $lifeexp - 2;
        $name = $row->Name;

        $con->query("UPDATE `world_Country` SET `LifeExpectancy` = '$newlife' WHERE `Name` = '$name'") or die("unable");
    }
}


?>
<!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" type="text/css" href="style/main.css" media="screen" />
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Home</title>
    </head>
    <body>
        <h1 class="top">MySQLi
            <?php require("includes/menu.php") ?>
        </h1>
        <div class="wrap">
        <form action="" method="POST">
            <input type="submit" value="+2 years life excpectancy in african republics" name="+2ale"  class="submitbtn"/> -
            <input type="submit" value="-2 years life expectancy in african republics" name="-2ale" class="submitbtn" />
        </form>
            <h2>New Results :</h2>
            <table>
                <th>Name</th>
                <th>New life expectancy</th>
            <?php
                if(isset($_POST["+2ale"])) {
                    $rs = $con->query("SELECT `Name`, `LifeExpectancy` FROM `world_Country` WHERE `Continent` = 'Africa' AND `GovernmentForm` = 'Republic' ORDER BY `Name` DESC");
                    while(list($name, $life) = $rs->fetch_row()) {
                        echo "<tr>";
                        echo "<td>$name</td>" . "<td>$life</td>";
                        echo "</tr>";
                    }
                } elseif(isset($_POST["-2ale"])) {
                    $rs = $con->query("SELECT `Name`, `LifeExpectancy` FROM `world_Country` WHERE `Continent` = 'Africa' AND `GovernmentForm` = 'Republic' ORDER BY `Name` DESC");
                     while(list($name, $life) = $rs->fetch_row()) {
                        echo "<tr>";
                        echo "<td>$name</td>" . "<td>$life</td>";
                        echo "</tr>";
                    }
                }
            ?>
            </table>
        </div>
    </body>
</html>