PHP generated Chinese verification code garbled problem solving

PHP generated Chinese verification code garbled problem solving
The Chinese characters to be processed are first converted into HTML entities and reused by UTF8.

Sample code:

Ini_set (' jis-mapped Japanese Font Support ', false);
$pic =imagecreate (250,30);
$black =imagecolorallocate ($pic, 0,0,0);
$white =imagecolorallocate ($pic, 255,255,255);
$font = "C://windows//fonts//simhei.ttf"; $str = ' People's Republic of China ';
$str = mb_convert_encoding ($str, "html-entities", "Utf-8"):& #21738;& #19968;& #38431;& #20248; & #20808;& #24320;& #29699;

Imagettftext ($pic, 10,0,10,20, $white, $font, $STR);

Header ("Content-type:image/jpeg");
$filename = './photo.jpg ';
$im =imagecreatefromjpeg ($filename);
Imagecopymerge ($im, $pic, 0,0,0,0,250,30,50);
Imagejpeg ($im);

Pchart Sample code:

/*
Example14:a Smooth Flat Pie graph
*/

Standard inclusions
Header ("content-type:text/html; Charset=utf-8 ");
Include_once ("pchart/pdata.class.php tutorial");
Include_once ("pchart/pchart.class.php");
Dataset definition
$DataSet = new PData;
$DataSet->addpoint (Array (10,2,3,5,3), "Serie1");
$DataSet->addpoint (Array ("Iconv_arr", "February", "March", "APR", "may"), "Serie2");
$DataSet->addallseries ();
$DataSet->setabsciselabelserie ("Serie2");

Initialise the graph
$Test = new Pchart (300,200);
$Test->loadcolorpalette ("Sample/softtones.txt");
$Test->drawfilledroundedrectangle (7,7,293,193,5,240,240,240);
$Test->drawroundedrectangle (5,5,295,195,5,230,230,230);

Draw the pie chart
$Test->setfontproperties ("Fonts/simkai.ttf", 8);
$Test->drawbasicpiegraph ($DataSet->getdata (), $DataSet->getdatadescription (), 120,100,70,pie_percentage , 255,255,218);
$Test->drawpielegend (230,15, $DataSet->getdata (), $DataSet->getdatadescription (), 250,250,250);

$Test->render ("Example14.png");

/**
* Convert text from UTF8 encoding to digital form encoding (HTML entity)
* @param $arr This parameter can be an array or string
* @author Steven lxq70361@qq.com
*/
function Iconv_arr ($arr) {
if (Is_array ($arr)) {
foreach ($arr as $k => $v) {
$arr [$k] = Iconv_arr ($v);
}

}else{
$arr = mb_convert_encoding ($arr, "html-entities", "utf-8");
}
return $arr;
}