Displaying Variable Problem

[Sonic_Rage]

I have a page that works off of switches, I want the $page_title variable to show up with in a function, but I can't seem to make it work:

<?

$page_title ="Video Clips"; // This needs to show in functions when printing to browser

function show_categories()

{

open_table_main();
echo "<TR><TH>".$page_title."</TH></TR>\n";

 $query = "select category from rpg_cat_videos ORDER BY catid asc";
 $result = mysql_query($query);
 $num_results = mysql_num_rows($result);

 $i = 0; 
  while($row = mysql_fetch_array($result))
   { 
     $bgcolor = ($i++ & 1) ? '#eeeeee' : '#ffffff'; 
     echo "<TR><TD>";
     echo "<A HREF=\"".$PHP_SELF."?func=title\">";
     echo stripslashes($row["category"]);
     echo "</A>";
     echo "</TD></TR>\n";
   }
 close_table_main();

}

//.....

switch($func) {

default:
show_categories();
break; 

case "title":
show_titles();
break;

case "clip":
play_clip();
break;

}

?>

But when I view the source through the browser, I see the page title and the $PHP_SELF name don't appear either, looks like this:

<TABLE WIDTH="100%" CELLSPACING="2" CELLPADDING="2" BORDER="0" BGCOLOR="">
<TR><TH> </TH></TR>
<TR><TD><A HREF=" ?func=title">Category I</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Category II</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Category III</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Category IV</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Category V</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Category VI</A></TD></TR>
<TR><TD><A HREF=" ?func=title">Miscellenous</A></TD></TR>
</TABLE>

What am I doing wrong here?

[fukas]

$var = "Jahaaaaa";

function foo() {
  // don't forget this line bellow
  global $var;

  print $var;
}

[Sonic_Rage]

That worked well for the title, thank you. But what about the $PHP_SELF not showing up?

echo "<TR><TD>";
echo "<A HREF=\"".$PHP_SELF."?func=title\">";
echo stripslashes($row["category"]);
echo "</A>";
echo "</TD></TR>\n";

Do I need to set a variable to that too?😕