$data = json_decode(safe_output(get_parameter('data')), true);
$max = get_parameter('max');
$title = get_parameter('title');
$mode = get_parameter('mode', 1);
gd_histogram($width, $height, $mode, $data, $max, $font, $title);
break;
case 'progressbar':
$width = get_parameter('width');
$height = get_parameter('height');
$progress = get_parameter('progress');
$out_of_lim_str = get_parameter('out_of_lim_str', false);
$out_of_lim_image = get_parameter('out_of_lim_image', false);
$font = get_parameter('font');
$title = get_parameter('title');
$mode = get_parameter('mode', 1);
gd_progress_bar($width, $height, $progress, $title, $font, $out_of_lim_str, $out_of_lim_image, $mode);
break;
}
function histogram($chart_data, $width, $height, $font, $max, $title, $mode, $ttl = 1)
{
$graph = array();
$graph['data'] = $chart_data;
$graph['width'] = $width;
$graph['height'] = $height;
$graph['font'] = $font;
$graph['max'] = $max;
$graph['title'] = $title;
$graph['mode'] = $mode;
$id_graph = serialize_in_temp($graph, null, $ttl);
return "<img title='" . $graph["title"] . "' src='include/graphs/functions_gd.php?graph_type=histogram&ttl=" . $ttl . "&id_graph=" . $id_graph . "'>";
}
if (!$id_graph) {
exit;
}
$graph = unserialize_in_temp($id_graph, true, $ttl);
if (!isset($graph)) {
exit;
}
if (!isset($graph['fontsize'])) {
$graph['fontsize'] = 6;
}
switch ($graph_type) {
case 'histogram':
gd_histogram($graph['width'], $graph['height'], $graph['mode'], json_decode($graph['data'], true), $graph['max'], $graph['font'], $graph['title'], $graph['fontsize']);
break;
case 'progressbar':
gd_progress_bar($graph['width'], $graph['height'], $graph['progress'], $graph['title'], $graph['font'], $graph['out_of_lim_str'], $graph['out_of_lim_image'], $graph['mode'], $graph['fontsize']);
break;
case 'funnel':
gd_funnel_chart($graph['data'], $graph['font']);
break;
}
}
function gd_histogram($width, $height, $mode, $data, $max_value, $font, $title, $fontsize = 8)
{
// $title is for future use
$nvalues = count($data);
Header("Content-type: image/png");
$image = imagecreate($width, $height);
$white = ImageColorAllocate($image, 255, 255, 255);
imagecolortransparent($image, $white);
$black = ImageColorAllocate($image, 0, 0, 0);
