Global vars problem

[mrbaseball34]

I'm defining global vars and assigning them for use later in my script.
This works fine in my first code section, which is a heredoc.
But any other time, I try to access the global vars, I get nothing,
it's like they aren't even set.

This script creates dynamic VXML for two environments, Voxeo and Visibridge.
I ned the <voice...> tag for Visibridge and not for Voxeo. I don't want to have to
check the UA each time I want to separate code based on the UA.

Where am I going wrong? Maybe I can't see the forest for the trees or don't
understand the global scope as well as I should.

I shortened the script so I could post here. If you need the whole script, it can be
obtained here: http://www.austinmetrobaseball.com/vxml/amblvxml.txt

<?
  header('Cache-Control: no-cache');
  header("content-type: text/xml");  

  global $UA;
  global $vtag;
  global $vtagend;

  $UA = $_SERVER['HTTP_USER_AGENT'];

  if (strpos($UA, 'VoxGateway') > 0)  {
    $vtag = "";$vtagend = "";
  } else {
    $vtag = "<voice name=\"'Microsoft Mary'\">";
    $vtagend = "</voice>";
  }

echo <<<MAIN
<?xml version="1.0" encoding="UTF-8"?> 
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://www.w3.org/2001/vxml 
      http://www.w3.org/TR/voicexml20/vxml.xsd">
  <meta name="maintainer" content="[e-mail]" /> 
  <!-- http://webhosting.voxeo.net/15417/www/ambl2.vxml -->
  <var name="teamid" expr="0" />
  <var name="team_name" />
  <var name="team_pin" />
  <var name="retrievedpin" />
  <var name="gamenum" />
  <var name="hometeam" />
  <var name="homeid" />
  <var name="homescore" />
  <var name="visitteam" />
  <var name="visitid" />
  <var name="visitorscore" />
  <var name="dow" />
  <var name="month" />
  <var name="day" />
  <var name="time" />
  <var name="fld" />
  <form id="welcome">
    <!--  
       ************** 
       Play welcome message...
       ************** 
    -->
    <block>
      <prompt>$vtag Welcome to the Austin Metro Baseball League's Scores Reporting System. $vtagend </prompt>
      <goto next="#team_info" />
    </block>
  </form>
  <form id="team_info">
    <field name="team_id">
      <prompt count="1">$vtag Please say your team name or key in your Team I D. $vtagend </prompt>
      <prompt count="2">$vtag Your Team Name or ID, please. $vtagend </prompt>
      <!--  
        ************** 
        This is an inline grammar of team names and IDs.
        ************** 
      -->
MAIN;
  $UA = $_SERVER['HTTP_USER_AGENT'];
  if (strpos($UA, 'VoxGateway') > 0) 
  {
    // Voxeo
    echo "\n";
    echo '      <grammar type="application/srgs+xml" src="http://www.austinmetrobaseball.com/vxml/grammar/team2.grxml"/>'; 
    echo "\n";
  } else {
    // Visibridge
    echo "\n";
    echo '      <grammar type="application/srgs+xml" src="http://www.austinmetrobaseball.com/vxml/grammar/team1.grxml"/>'."\n"; 
    echo '      <grammar src="builtin:dtmf/digits"/>'; 
    echo "\n";
  }
echo <<<MAIN2
      <help> Please say your team name or key in your Team ID.</help>
    </field>

<!--  
   ************** 
   Retrieve Team details from teamdetails.php so we can  
   check to see if the entered PIN matches 
   ************** 
-->
MAIN2;
  $UA = $_SERVER['HTTP_USER_AGENT'];
  if (strpos($UA, 'VoxGateway') > 0) 
  {
    // Voxeo
    echo "\n";
echo <<<EOT1
    <filled> 
      <assign name="teamid" expr="team_id.id" />
      <data name="domTeam" src="http://www.austinmetrobaseball.com/vxml/teamdetails.php" namelist="teamid" />
      <assign name="document.retrievedpin" expr="domTeam.documentElement.getElementsByTagName('pin').item(0).firstChild.data" />      

      <assign name="document.team_name" expr="domTeam.documentElement.getElementsByTagName('name').item(0).firstChild.data" />      

      <goto next="#get_pin" />
    </filled>
EOT1;
    echo "\n";
  } else {
    // Visibridge
    echo "\n";
echo <<<EOT1
    <filled>
      <log label="ID entered" expr="team_id" />
      <assign name="teamid" expr="team_id" />
      <assign name="document.teamid" expr="team_id" />
      <data name="domTeam" src="http://www.austinmetrobaseball.com/vxml/teamdetails.php" namelist="teamid" />
      <assign name="document.retrievedpin" expr="domTeam.pin[0]._text" />
      <assign name="document.team_name" expr="domTeam.name[0]._text" />
      <goto next="#get_pin" />
    </filled>
EOT1;
    echo "\n";
  }
?>
  </form>
   <!-- Script shortened here...-->
  <form id="enter_vscore">
    <disconnect />
    <!-- 
      **************
      Confirm the entered game details
      **************
    -->
    <!-- 
    <value expr="session.callerid " />
      <prompt>
        <? $vtag ?> 
          You have entered <value expr="visitteam"/> <value expr="visitscore"/> and
          <value expr="hometeam"/> <value expr="homescore"/>  

          Is this correct?
         <? $vtagend ?> 
      </prompt>
    -->
  </form>
</vxml>

[bpat1434]

Well...
1.) You don't need to globalize the variables, you're not using them within functions (so the scope doesn't change)...
2.) If you choose to globalize them, you can do it on one line....
3.) You don't echo the variables, so they won't come through no matter what you do....

Your lines at the end should be:

<form id="enter_vscore">
    <disconnect />
    <!--
      **************
      Confirm the entered game details
      **************
    -->
    <!--
    <value expr="session.callerid " />
      <prompt>
        <? echo $vtag; ?>
          You have entered <value expr="visitteam"/> <value expr="visitscore"/> and
          <value expr="hometeam"/> <value expr="homescore"/>  

          Is this correct?
         <? echo $vtagend; ?>
      </prompt>
    -->
  </form>

~Brett

[mrbaseball34]

DUH, as I feel the hammer...

[Andrew_W_Peace]

Good answer given there, but you're missing one detail. Even if you did want to use those inside of functions, you wouldn't do it like that. That's improper use of the global statement. It'd be done like this:

$string = "PHP rocks";

printstring();

function printstring()
{
   global $string;
   print $string;
}

That script would pring "PHP rocks". See what I'm sayin'?

-Peace!