<?php

if (!isset($loggingFlag)) $loggingFlag = false;
$logFile = 0;
$logTime = 0;
$globalModuleName = "";


function startLog($moduleName="") {
   global $loggingFlag, $logFile, $globalModuleName, $logTime;
   if (!$loggingFlag) $loggingFlag = true;
   if ($loggingFlag && !is_resource($logFile)) $logFile = fopen("errorlog.txt","a");

   if (strlen($moduleName) > 0) $globalModuleName = $moduleName;
   else $globalModuleName = $_SERVER['PHP_SELF'];

   fwrite($logFile,"-------------------------------------------\n");
   fwrite($logFile,"-- $globalModuleName --\n");
   $now = time();
   $logTime = microtime(true);
   fwrite($logFile,"-- " . date("Y-m-d H:i:s",$now) . " --\n");
}

function writeLog($text,$moduleName="") {
   global $loggingFlag, $logFile, $globalModuleName, $logTime;
   if (!$loggingFlag) return;

   if (strlen($moduleName) > 0) $globalModuleName = $moduleName;
   if (strlen($globalModuleName) > 0) fwrite($logFile,"$globalModuleName: ");
   $incr = microtime(true) - $logTime;
   if (!is_string($text)) {
      $type = gettype($text);
      fwrite($logFile,"text is not a string - $type\n");
      switch ($type) {
         case 'resource':
         case 'resource':
         case 'array':
         case 'NULL':
            return;
      }
   }
   else $text = trim($text);

   fwrite($logFile,trim($text) . " (" . number_format($incr,3) . ")\n");
}

function logExit($text,$moduleName="") {
   global $loggingFlag, $logFile;

   if (!$loggingFlag) startLog($moduleName);

   if (strlen($moduleName) > 0) $globalModuleName = $moduleName;
   writeLog($logFile,$text,$moduleName);
   exit;
}

function logQuery($school_num,$table_name,$query,$module="") {
   $logFile = fopen("query.log","a");
   $time = date("Y-m-d H:i:s",time());
   $userid = $_SESSION['UserInfo']['userid'];
   fprintf($logFile,"%d|%s|%s|%s|%s|%s\n",$school_num,$table_name,$time,$query,$module,$userid);
}

?>