检测选择值中的网址并重定向到该网址

Question

I want to make a form and redirect user to a specific url mentionned in the select value.

This is my form :

<form>
  <select name="url" > 
    <option value="http://www.google.com/">Google</option>
    <option value="http://www.bing.com/">Bing</option>
  </select> 
  <input name="name" type="text" placeholder="Name" />
  <input name="age" type="text" placeholder="Age" />
  <button type="submit">Go</button>
</form>

For example, if the user click on "Go" when "Page2" is selected, he will be redirected to page "http://www.example.com/page2" ("Name" and "Age" values will be transferred to this page).

Just like this code :

<select name="jumpit" onchange="document.location.href=this.value"> 
  <option selected value="">Make a Selection</option>
  <option value="http://www.google.com/">Google</option>
  <option value="http://www.bing.com">Bing</option>
</select> 

except that i need the redirection to be done after the submit button click not onchange select.

That's all. Thanks !

Answer 1

Here you are, also it was tested and working:

HTML

<form action="some_file.php" method="post">
    <select name="url">
        <option value="http://www.google.com/">Google</option>
        <option value="http://www.bing.com/">Bing</option>
    </select>
    <input name="name" type="text" placeholder="Name" />
    <input name="age" type="text" placeholder="Age" />
    <button type="submit">Go</button>
</form>

some_file.php

if (isset($_POST['url'])) {
    $url  = $_POST['url']."?name=".urlencode($_POST['name'])."&age=".urlencode($_POST['age']);

    header("Location: ".$url);
    exit;
}

Then you can access them with GET, ie. $_GET['name'] will be the same, as you entered into name input field.