php script not work

[neomotive]

my scripts work in my pc local webserver but not work in real webhost

-----------------------

example:

-------

<?

echo '<form method="post" action="';echo $_SERVER['PHP_SELF'];echo '">

<table border="0" width="300" cellspacing="0" cellpadding="0">

<tr>

<td height="30"><p align="center">Your E-mail:</p></td>

<td height="30"><p align="center"><input type="Text" name="email"></p></td>

</tr>

</table>

<input type="hidden" name="ref" value="';echo $r;echo '">

<input type="Submit" name="submit" value="I agree">

</form>';

 

if ($submit == true) {

 

  /* --- My executable script --- */

 

  } else {

  }

?>

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what can i do?

[harristweed]

try converting '<?' to '<?php'