function makeGraph($receiver, $array_of_freezers, $graphname, $j)
{
$title = $graphname[$receiver];
print "Graphing Receiver: {$receiver} \t {$title}\n";
$command_line = "";
foreach ($array_of_freezers as $freezer_id => $freezer_details) {
$db_name = $freezer_details[1];
$legend = $freezer_details[2];
$color = $freezer_details[3];
$result = getTempAvg($db_name);
if ($result == 999) {
$result = "--";
}
//Check for lockfile
$filename = $legend . ".lock";
if (file_exists($filename)) {
$lockfilemark = "*";
} else {
$lockfilemark = "";
}
$command_line .= " DEF:temp{$freezer_id}={$db_name}.rrd:freezer1:AVERAGE LINE2:temp{$freezer_id}#{$color}:\"{$legend}({$result}){$lockfilemark}\" ";
}
$begin = "rrdtool graph receiver{$j}.png ";
$end = " --disable-rrdtool-tag --upper-limit -20 --lower-limit -100 -D --rigid --font LEGEND:10:\"Arial Bold\" --font TITLE:13:\"Arial\" --title=\"{$title}\" -w 310 -h 275";
$end .= " --color BACK#000000 --color FONT#FFFFFF --color SHADEA#000000 --color SHADEB#000000 --color AXIS#FFFFFF --color CANVAS#000000 --color MGRID#FFFF33";
// $end = " --slope-mode --disable-rrdtool-tag --upper-limit -20 --lower-limit -100 -D --rigid --vertical-label \"Deg C\" --title=\"$title\" -w 310 ";
$final_command = $begin . $command_line . $end;
$output = shell_exec($final_command);
//print "\n".$final_command."\n\n";
}
// CRON Job script to monitor rrd databases and send emails
// See thermo_includes.php for setting threshold value, email addresses etc.
// JDeRisi 2013
include 'thermo_includes.php';
print "<pre>";
$myarray = getFreezers($datafile);
$rec_count = count($myarray);
print "Fetching last 30 minutes for {$rec_count} receivers.\n";
$j = 0;
foreach ($myarray as $receiver => $array_of_freezers) {
print "Receiver: {$receiver}\n";
foreach ($array_of_freezers as $id => $freezer_array) {
$db_name = $freezer_array[1];
$label = $freezer_array[2];
print "{$label} \t : {$db_name} \t : ";
$result = getTempAvg($db_name);
if ($result != 999) {
print ": \tAVG: {$result} \t";
$check = checkResult($result, $threshold);
if (!$check) {
// Check for a lockfile
$filename = $label . ".lock";
if (file_exists($filename)) {
print " Lock file detected. No alert sent.";
} else {
sendAlert($result, $threshold, $db_name, $label, $graphname[$receiver], $contactfile);
$mylock = fopen($filename, "w");
if ($mylock == false) {
print "Could not creat lock file {$filename}";
} else {
fwrite($mylock, "Locked");
