How to use Japanese characters on PHPlot

 
＜?php
# 5.6. Example - Bar Chart, Label Options
# PHPlot Example: Bar chart, annual data
require_once 'phplot.php';

$data = array(
  array('1985', 340),    array('1986', 682),    array('1987', 1231),
  array('1988', 2069),   array('1989', 3509),   array('1990', 5283),
  array('1991', 7557),   array('1992', 11033),  array('1993', 16009),
  array('1994', 24134),  array('1995', 33768),  array('1996', 44043),
  array('1997', 55312),  array('1998', 69209),  array('1999', 86047),
  array('2000', 109478), array('2001', 128375), array('2002', 140767),
);

$plot = new PHPlot(800, 600);

# Define font place . This site places on the XREA.com host,so I place fonts in following folder. (########## : my ID) 
$plot->SetTTFPath('/virtual/#########/freefonts/');
# Define default font. 
$plot->SetDefaultTTFont('ipam-mona.ttf');

$plot->SetImageBorderType('plain');

$plot->SetPlotType('bars');
$plot->SetDataType('text-data');
$plot->SetDataValues($data);

# Let's use a new color for these bars:
$plot->SetDataColors('magenta');

# Force bottom to Y=0 and set reasonable tick interval:
$plot->SetPlotAreaWorld(NULL, 0, NULL, NULL);
$plot->SetYTickIncrement(10000);
# Format the Y tick labels as numerics to get thousands separators:
$plot->SetYLabelType('data');
$plot->SetPrecisionY(0);

# Main plot title:
$str = "米国　携帯電話登録者";
# Convert to UTF-8 with mbstring.
$str = mb_convert_encoding($str,"UTF-8","EUC-JP");
# Convert to UTF-8 with iconv
# $str = iconv("EUC-JP","UTF-8//TRANSLIT",$str);

# Set converted value.
$plot->SetTitle($str); 

# Y Axis title:
$str = "登録者（千人）";
# Convert to UTF-8 with mbstring.
$str = mb_convert_encoding($str,"UTF-8","EUC-JP");
# Convert to UTF-8 with iconv
# $str = iconv("EUC-JP","UTF-8//TRANSLIT",$str);

# Set converted value.
$plot->SetYTitle(($str));

# Turn off X tick labels and ticks because they don't apply here:
$plot->SetXTickLabelPos('none');
$plot->SetXTickPos('none');

$plot->DrawGraph();

?>

 
＜?php
# PHPlot Example: Pie/text-data-single
require_once 'phplot.php';

# The data labels aren't used directly by PHPlot. They are here for our
# reference, and we copy them to the legend below.
$data = array(
  array('オーストラリア', 7849),
  array('コンゴ共和国', 299),
  array('カナダ', 5447),
  array('コロンビア', 944),
  array('ガーナ', 541),
  array('中国', 3215),
  array('フィリピン', 791),
  array('南アフリカ', 19454),
  array('メキシコ', 311),
  array('アメリカ合衆国', 9458),
  array('ソビエト連邦', 9710),
);

$plot = new PHPlot(800,600);

# Define font place . This site places on the XREA.com host,so I place fonts in following folder. (########## : my ID) 
$plot->SetTTFPath('/virtual/#########/freefonts/');
# Define default font. 
$plot->SetDefaultTTFont('ipam-mona.ttf');

$plot->SetImageBorderType('plain');

$plot->SetPlotType('pie');
$plot->SetDataType('text-data-single');
$plot->SetDataValues($data);

# Set enough different colors;
$plot->SetDataColors(array('red', 'green', 'blue', 'yellow', 'cyan',
                        'magenta', 'brown', 'lavender', 'pink',
                        'gray', 'orange'));

# Main plot title:
$str = "世界の金の生産量, 1990年 \n(1000s of Troy Ounces)";
# Convert to UTF-8 with mbstring.
$str = mb_convert_encoding($str,"UTF-8","EUC-JP");
# Convert to UTF-8 with iconv
# $str = iconv("EUC-JP","UTF-8//TRANSLIT",$str);

# Set converted value.
$plot->SetTitle($str); 

# Build a legend from our data array.
# Each call to SetLegend makes one line as "label: value".
foreach ($data as $row)
{
# Convert to UTF-8 with mbstring.
  $row[0]=mb_convert_encoding($row[0],"UTF-8","EUC-JP");
# Convert to UTF-8 with iconv
# $row[0]= iconv("EUC-JP","UTF-8//TRANSLIT",$row[0]);
  $plot->SetLegend(implode(': ', $row));
}

$plot->DrawGraph();

?>