redirect links like facebook etc?

[xcoderx]

how exactly does facebook use that redirect thing to send users to external website?

 

e.g.

 

http://www.facebook.com/l.php?u=http://www.youtube.com/watch%3Fv%3D8WnCdf04ba0%26h%3D34021&h=60567

 

how to make an option like this to our own site?

[Graxeon]

It just has a generic "do you really want to continue" yes/no option to a link defined by whatever comes after the .php?u=

[xcoderx]

culd u post some example of coding? in my site where i have a field where users can post their website and i feel like making it kind of like that. show me some examples and how to add it to the field?

[-Karl-]

<?php
  if (isset($_GET['u'])) {
      echo 'Do you really want to continue?<br/>
      <form method="post" action=""><input type="submit" name="yes" value="Yes"><input type="submit" name="no" value="No"></form>';
  }
  
  if (isset($_POST['yes'])) {
      //Redirect Code
  }
  
  if (isset($_POST['no'])) {
      //Go back to old location
  }
?>

 

Something like that would be suffice.

[xcoderx]

ok and the link which from database displays is like Website: <a href="#">somesite.com</a>, so how am i goin to use a link.php to be added automatically to the fields where user add a link to external website?

 

[-Karl-]

<a href="http://www.yoursite.com/index.php?u=somesite.com>

[Graxeon]

I haven't tested it but it should be something like this with the redirect put in:

 

 

<?php
  if (isset($_GET['u'])) {
      echo 'Do you really want to continue?<br/>
      <form method="post" action=""><input type="submit" name="yes" value="Yes"><input type="submit" name="no" value="No"></form>';
  }
  
  if (isset($_POST['yes'])) {
      //Redirect Code
      header("Location: " .$_GET['u']);
  }
  
  if (isset($_POST['no'])) {
      //Go back to old location or whatever else you want.
  }
?>