7 $channel_list = stats_channel_list();

     8 $first_channel = $channel_list[0];

     9 $channel = ( isset($_REQUEST['channel']) && in_array($_REQUEST['channel'], $channel_list) ) ? $_REQUEST['channel'] : $first_channel;

    10 

    11 // generate the data

    12 // we're doing this by absolute hours, not by strictly "24 hours ago", e.g. on-the-hour stats

    13 $this_hour = gmmktime(gmdate('H'), 0, 0);

    14 $graphdata = array();

    15 

    16 for ( $i = 23; $i >= 0; $i-- )

    17 {

    18   $basetime = $this_hour - ( $i * 3600 );

    19   $ts = date('H:i', $basetime);

    20   $basetime += 3600;

    21   $graphdata[$ts] = stats_message_count($channel, 60, $basetime);

    22 }

    23 

    24 $max = max($graphdata);

    25 

    26 // Determine axis interval

    27 $interval = 2;

    28 if ( $max > 20 )

    29   $interval = 4;

    30 if ( $max > 25 )

    31   $interval = 5;

    32 if ( $max > 50 )

    33   $interval = 10;

    34 if ( $max > 200 )

    35   $interval = 40;

    36 if ( $max > 500 )

    37   $interval = 80;

    38 if ( $max > 1000 )

    39   $interval = 100;

    40 if ( $max > 2000 )

    41   $interval = 200;

    42 if ( $max > 5000 )

    43   $interval = 1000;

    44 if ( $max > 15000 )

    45   $interval = 1500;

    46 if ( $max > 30000 )

    47   $interval = round($max / 10);

    48 

    49 $g = new GraphMaker(); // _Compat();

    50 

    51 $g->SetGraphPadding(20, 30, 20, 15);

    52 $g->SetGraphAreaHeight(200);

    53 $g->SetBarDimensions(26, 0);

    54 $g->SetBarPadding(7);

    55 $g->SetBarData($graphdata);

    56 $g->SetGraphBackgroundTransparent(240, 250, 255, 0);

    57 $g->SetGraphTransparency(25);

    58 $g->SetAxisStep($interval);

    59 $g->SetGraphTitle($channel . ' message count - last 24 hours');

    60 

    61 $g->DrawGraph();