if (!is_null($evalcode)) {
ob_start();
eval($evalcode);
- $upvals = explode("\n", ob_get_contents());
+ $ret = ob_get_contents();
+ if (strlen($ret)) { $upvals = explode("\n", $ret); }
ob_end_clean();
}
$walkfunc = create_function('&$val,$key', '$val = is_numeric($val)?$val:"U";');
$upvals[] = is_null($val)?'U':$val;
}
}
- $update_cmd = 'rrdtool update '.$this->rrd_file.' N:'.implode(':', $upvals);
- $return = `$update_cmd 2>&1`;
+ $return = null;
+ if (count($upvals)) {
+ $update_cmd = 'rrdtool update '.$this->rrd_file.' N:'.implode(':', $upvals);
+ $return = `$update_cmd 2>&1`;
+ }
if (strpos($return, 'ERROR') !== false) {
trigger_error($this->rrd_file.' - rrd update error: '.$return, E_USER_WARNING);
$duration = isset($gconf['duration'])?$gconf['duration']:396*86400; // 365+31 days
$slice = isset($gconf['slice'])?$gconf['slice']:86400; // 1 day
// vertical lines at month borders
- $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01')).'#FF0000';
- $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01').' -1 year').'#FF0000';
+ $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01 12:00:00')).'#FF0000';
+ $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01 12:00:00').' -1 year').'#FF0000';
}
else {
$duration = isset($gconf['duration'])?$gconf['duration']:$this->rrd_step*500; // 500 steps