htdocs/graph.php
author Dan
Sat, 10 Jan 2009 14:12:36 -0500
changeset 50 45164bc2567a
parent 44 73f74d395f95
permissions -rw-r--r--
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<?php
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require('../stats-fe.php');
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require('../graphs.php');
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require('../timezone.php');
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$channel_list = stats_channel_list();
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$first_channel = $channel_list[0];
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$channel = ( isset($_REQUEST['channel']) && in_array($_REQUEST['channel'], $channel_list) ) ? $_REQUEST['channel'] : $first_channel;
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function makeGraph($type = 'bar')
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{
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  global $webtheme;
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  $class = ( $type == 'line' ) ? 'LineGraph' : 'BarGraph';
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  $g = new $class(); // _Compat();
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  $g->SetGraphAreaHeight(200);
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  $g->SetGraphPadding(30, 30, 20, 15);
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  if ( get_class($g) == 'BarGraph' )
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  {
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    $g->SetBarPadding(7);
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    $g->SetBarFont(1);
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    $g->SetBarDimensions(25, 7);
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  }
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  else if ( get_class($g) == 'LineGraph' )
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  {
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    $g->SetGraphAreaWidth(800);
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  }
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  $g->SetAxisDeepness(7);
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  $g->SetGraphTitleFont(2);
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  $g->SetGraphBackgroundTransparent(false, 240, 250, 255);
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  $g->SetGraphTransparency(25);
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  $g->SetAxisScaleColor(90, 90, 90);
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  $g->SetAxisScaleFont(1);
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  $g->SetScaleRoundY(0);
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  $g->SetScaleRoundX(0);
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  $g->SetAxisStepSize(7);
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  if ( file_exists("./themes/$webtheme/graph_$type.def") )
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    $g->LoadGraph(realpath("./themes/$webtheme/graph_$type.def"));
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  return $g;
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}
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// generate the data
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// we're doing this by absolute hours, not by strictly "24 hours ago", e.g. on-the-hour stats
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$mode = ( isset($_GET['mode']) ) ? $_GET['mode'] : 'lastday';
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switch ( $mode )
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{
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  case 'lastday':
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  default:
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    $g = makeGraph();
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    $graph_title = $channel . ' message count - last 24 hours';
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    $this_hour = gmmktime(gmdate('H'), 0, 0);
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    $graphdata = array();
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    for ( $i = 23; $i >= 0; $i-- )
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    {
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      $basetime = $this_hour - ( $i * 3600 );
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      $ts = date('H:i', $basetime);
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      $basetime += 3600;
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      $graphdata[$ts] = stats_message_count($channel, 60, $basetime);
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    }
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    break;
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  case 'lastweek':
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    $g = makeGraph();
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    $graph_title = $channel . ' activity - last 14 days';
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    $this_day = gmmktime(0, 0, 0);
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    $graphdata = array();
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    for ( $i = 13; $i >= 0; $i-- )
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    {
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      $basetime = $this_day - ( $i * 86400 );
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      $ts = date('D n/j', $basetime);
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      $basetime += 86400;
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      $graphdata[$ts] = stats_message_count($channel, 1440, $basetime);
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    }
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    $g->SetBarPadding(12);
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    break;
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  case 'lastmonth':
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    $g = makeGraph();
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    $graph_title = $channel . ' activity - last 30 days';
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    $this_day = gmmktime(0, 0, 0);
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    $graphdata = array();
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    for ( $i = 29; $i >= 0; $i-- )
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    {
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      $basetime = $this_day - ( $i * 86400 );
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      $ts = date('Y-m-d', $basetime);
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      $basetime += 86400;
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      $graphdata[$ts] = stats_message_count($channel, 1440, $basetime);
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    }
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    $g->SetBarPadding(15);
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    break;
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  case 'lasthour':
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    $g = makeGraph('line');
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    $g->SetAxisStepX(5);
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    $g->SetScaleFunctionX('lasthour_scaler');
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    function lasthour_scaler($v, $g)
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    {
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      $k = array_keys($g->data);
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      return ( isset($k[$v]) ) ? $k[$v] : 'now';
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    }
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    $graph_title = $channel . ' activity - last hour';
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    $data = stats_raw_data($channel, 59);
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    $agg = array();
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    foreach ( $data as $message )
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    {
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      $tid = intval(ltrim(date('i', $message['time']), '0'));
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      if ( !isset($agg[$tid]) )
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        $agg[$tid] = 0;
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      $agg[$tid]++;
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    }
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    $graphdata = array();
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    $minutenow = intval(ltrim(date('i', NOW), '0'));
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    $hournow = intval(ltrim(date('H', NOW), '0'));
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    $hourthen = intval(ltrim(date('H', NOW-3600), '0'));
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    for ( $i = $minutenow + 1; $i < 60; $i++ )
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    {
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      $istr = ( $i < 10 ) ? "0$i" : "$i";
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      $graphdata["$hourthen:$istr"] = ( isset($agg[$i]) ) ? $agg[$i] : 0;
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    }
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    for ( $i = 0; $i <= $minutenow; $i++ )
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    {
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      $istr = ( $i < 10 ) ? "0$i" : "$i";
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      $graphdata["$hournow:$istr"] = ( isset($agg[$i]) ) ? $agg[$i] : 0;
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    }
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    break;
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}
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$max = max($graphdata);
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// Determine axis interval
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$interval = 2;
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if ( $max > 20 )
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  $interval = 4;
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if ( $max > 25 )
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  $interval = 5;
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if ( $max > 50 )
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  $interval = 10;
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if ( $max > 200 )
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  $interval = 40;
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if ( $max > 500 )
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  $interval = 80;
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if ( $max > 1000 )
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  $interval = 100;
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if ( $max > 2000 )
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  $interval = 200;
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if ( $max > 3200 )
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  $interval = 300;
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if ( $max > 4000 )
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  $interval = 500;
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if ( $max > 5000 )
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  $interval = 1000;
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if ( $max > 15000 )
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  $interval = 1500;
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if ( $max > 30000 )
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  $interval = round($max / 10);
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$g->data = $graphdata;
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$g->SetGraphTitle($graph_title);
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$g->SetAxisStepY($interval);
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$g->DrawGraph();
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