[gelöst] Ansage bei Besetzt

#!/usr/bin/php -q
<?php

$server = "127.0.0.1";
$amiuser = "agi";
$amipass = "123";
$hintcontext = "default";

$debug = false;
$logfile = "/var/log/asterisk/extstatdial_agi.log";

##############################

ob_implicit_flush(true);
set_time_limit(10);
error_reporting(0);

$in = fopen("php://stdin","r");

if ($debug==true) $stdlog = fopen($logfile, "w");

function read() {
  global $in, $debug, $stdlog;
  $input = str_replace("\n", "", fgets($in, 4096));
  if ($debug) fputs($stdlog, "read: $input\n");
  return $input;
}

function errlog($line) {
  global $debug, $err, $stdlog;
  if ($debug) fputs($stdlog, "errlog: $line\n");
  #echo "VERBOSE \"$line\"\n";
}

function write($line) {
  global $debug, $stdlog;
  if ($debug) fputs($stdlog, "write: $line\n");
  echo $line."\n";
}

while ($env=read()) {
  $s = split(": ",$env);
  $agi[str_replace("agi_","",$s[0])] = trim($s[1]);
  if (($env == "") || ($env == "\n")) {
    break;
  }
}

##############################

if ($socket = fsockopen($server, 5038)) {
    stream_set_timeout($socket, 0, 300000);
  }

function ami($command) {
    global $socket;
    fwrite ($socket, $command);
    $response = stream_get_contents($socket);
    if ($response == false) return "Fehlen beim lesen der Serverantwort.";
      else return $response;
  }

$amiresult = ami("Action: Login\r\nUserName: $amiuser\r\nSecret: $amipass\r\n\r\n");
errlog ("AMI Login: " . $amiresult);

$extstatus="other";
$amiresult = ami("Action: ExtensionState\r\nContext: $hintcontext\r\nExten: " . $agi['extension'] . "\r\n\r\n");
errlog ("AMI ExtensionState: " . $amiresult);
$amiarray = split("\r\n",$amiresult);
foreach ($amiarray AS $amival) {
    errlog ("Array - " . $amival);
    if(substr($amival,0,7)=="Status:") $extstatus=trim(substr($amival,7));
  }

$amiresult = ami("Action: Logoff\r\n\r\n");
errlog ("AMI Logoff: " . $amiresult);

fclose($socket);

write ('SET VARIABLE extstatus "' .$extstatus . '"');
read ();

##############################

fclose($in);
fclose($stdlog);

exit;
?>

exten => _XXX,1,AGI(extstatdial.agi)
exten => _XXX,n,GotoIf($["${extstatus}"="0"]?frei:besetzt)
exten => _XXX,n(frei),Dial(SIP/1001)
exten => _XXX,n(besetzt),Playback(bitte-warten)