Miscellany

 <?php
 ob_implicit_flush(true);
 set_time_limit(6);
 $in = fopen("php://stdin","r");
 $stdlog = fopen("/var/log/asterisk/my_agi.log", "w");

 // toggle debugging output (more verbose)
 $debug = false;

 // Do function definitions before we start the main loop
 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 $err;
   echo "VERBOSE \"$line\"\n";
 }

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

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