Ever sense I formatted and install PHP, Mysql, Apache this script no longer works.

It gives no errors, it just does not do anything, take a look mabye i screwed something up

PHP Code:
<?php

$date = date("D,M,Y");

if ($submit) {
   
  $body = str_replace("\r\n|\n|\r", "<br>", "$body");
  $body = str_replace("[q]", "<blockquote><font class=quote>","$body");
  $body = str_replace("[/q]", "</blockquote></font>","$body");

  // process form

  $db = mysql_connect("localhost", "root");

  mysql_select_db("site",$db);

  $sql = "INSERT INTO news (title,date,user,source,body) VALUES 

('$title','$date','$user','$source','$body')";

  $result = mysql_query($sql);

  echo "Thank you! Information entered.\n";

} else{



  // display form



  ?>
  <form method="post" action="<?php echo $PHP_SELF?>">

  Title:<input type="Text" name="title"><br><br>

  UserName:<input type="Text" name="user"><br><br>

  Source:<input type="Text" name="source"><br><br>

<textarea name="body" rows="20" cols="80" wrap="physical">

</textarea>

<P>


  <input type="Submit" name="submit" value="Enter information">

  </form>



  <?php



} // end if



?>