Getting value from dropdown list

Question

I'm trying to get the selected value from a dropdown list. The list has name 'select_employee', when I press the button with name 'save' I hope to get the value. I'm using a POST to to get the value.

I get the error 'Undefined index: select_employee'.

<div class="form-group">
    <h2>Enter Certified Course Details</h2>

    <?php
    // start of connect db
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "TrainingDB";

    $conn = new mysqli($servername, $username, $password, $dbname);

    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    } 
    //end of connect db
    ?>

    <form id="form" action="" method="post">
    <?php
    // Drop down list employee
    $sql = "SELECT * FROM employees";
    $result = $conn->query($sql);

    if ($result->num_rows > 0) {
        echo "Select Employee<br>";
        echo "<select name='select_employee' id='select_employee'>";
        // output data of each row
        while($row = $result->fetch_assoc()) {
          echo "<option value='" . $row['id'] . "'>" . $row['fname'] . " " . $row['sname'] . " </option>";
          }
        echo "</select>";
        echo "<br>";
    }
    ?>
    </form>

    <?php
    if(isset($_POST['save'])){
        echo "save<br>";
        $employee=$_POST['select_employee']; // error here
        echo "Selected Employee" . $employee . "<br>";
    }
    ?>

    <form Employee="/employee_page.php" method="post">
        <button type="submit" class="btn btn-primary" name="save" value="save">Save</button>
    </form>
    </div>

Answer 1

You are using two different form so make sure to use only one form.