I have a php file and I am trying to include another php file in it (for a dropdown) based on what is selected in the radio button but somehow it is not happenning.
To test my work I created a scenario in jsfiddle but there too its not working (i think in jsfiddle i am not loading necessary things which i dont know how to load - please help how to load it in jsfiddle https://jsfiddle.net/7gb4etbw/)
Also need help in javascript function to achieve the above. Appreciate if someone can help me with this. Thank you.
if male is selected, m_ext.php should get included else if female is selected, f_ext.php file should get selected
<?php
if(isset($_POST['submit']))
{
    $gender=$_POST['gender'];
    $_SESSION['gender']=$gender;
    echo "<script language='javascript'>window.location='nextpage.php';</script>";
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title><?php echo $info['title']; ?></title>
    <link href="css/layout.css" rel="stylesheet" type="text/css" />
    <script src="js/jquery-1.11.2.min.js"></script>
    <style type="text/css">
        .red_color {
        color: #F00;
    }
    </style>
<script language='javascript'>
func()
{
    // I am struggling here
}
</script>
</head>
<body>
    <form action="" method="post" name="Form1">
    <table width="100%" border="0" cellpadding="5" cellspacing="5">
        <tr>
            <td >
                <div align="left"><span class="red_color">*</span> 
                    Gender
                </div>
            </td>
            <td>
                <div align="left">
                    <input id="m" onclick="func()" name="mgender" value="Male" type="radio"  />
                    Male
                    <input id="f" onclick="func()" name="fgender" value="Female" type="radio" />
                    Female
                </div>
            </td>
        </tr>
        <tr>
            <td >
                <div align="left"><span class="red_color">*</span>
                    Message
                </div> 
            </td>
            <td >
                <div align="left">
                    <select name="txtname" id="txtid"">
                        <option value="" selected="selected">-Select-</option>
                        <?php include("m_ext.php"); ?>
                    </select>
                </div>
            </td>
        </tr>
    </table>
</body>
</html>
