Use PHP to convert GB encoding to UTF8_PHP tutorial

gb2utf8.php file is as follows:

Copy code The code is as follows:

Class GB2UTF8
{
var $gb; // GB2312 string to be converted
var $utf8; // Converted UTF8 string
var $CodeTable; // Used during conversion GB2312 code file array
var $ErrorMsg; // Error message during conversion process

function GB2UTF8($InStr="")
{
$this->gb= $InStr;
$this->SetGb2312();
($this->gb=="")?0:$this->Convert();
}

function SetGb2312($InStr="gb2312.txt")
{ // Set gb2312 code file, the default is gb2312.txt
$this->ErrorMsg="";
$tmp=@ file($InStr);
if (!$tmp) {
$this->ErrorMsg="No GB2312";
return false;
}
$this->CodeTable =array();
while(list($key,$value)=each($tmp)) {
$this->CodeTable[hexdec(substr($value,0,6))]= substr($value,7,6);
}
}

function Convert()
{ // To convert GB2312 string to UTF8 string, $gb needs to be set in advance
$this->utf8="";
if(!trim($this->gb) || $this->ErrorMsg!="") {
return ($this-> utf8=$this->ErrorMsg);
}
$str=$this->gb;

while($str) {
if (ord(substr($str ,0,1))>127)
{
$tmp=substr($str,0,2);
$str=substr($str,2,strlen($str));
$tmp=$this->U2UTF8(hexdec($this->CodeTable[hexdec(bin2hex($tmp))-0x8080]));
for($i=0;$i$this->utf8.=chr(substr($tmp,$i,3));
}
else
{
$tmp=substr($str,0,1);
$str=substr($str,1,strlen($str));
$this->utf8.=$tmp;
}
}
return $this->utf8;
}

function U2UTF8($InStr)
{
for($i=0;$i$str="";
if ($InStr < 0x80) {
$str.=ord($InStr);
}
else if ($InStr < 0x800) {
$str.=(0xC0 | $InStr>>6);
$str.=(0x80 | $InStr & 0x3F);
}
else if ($InStr < 0x10000) {
$str.=(0xE0 | $InStr>>12);
$str.=(0x80 | $InStr>>6 & 0x3F);
$str.=(0x80 | $InStr & 0x3F);
}
else if ($InStr < 0x200000) {
$str.=(0xF0 | $InStr>>18);
$str.=(0x80 | $InStr>>12 & 0x3F);
$str.=(0x80 | $InStr>>6 & 0x3F);
$str.=(0x80 | $ InStr & 0x3F);
}
return $str; 🎜>
Copy code

The code is as follows:

Header("Content-type: image/png");

$im = imagecreate(400,300); $black = ImageColorAllocate($im, 0,0,0); $white = ImageColorAllocate($im, 184,44,6); include("gb2utf8. php"); $obj=new gb2utf8();

$obj->gb="123abc China 456def test is correct";

$obj->Convert();
ImageTTFText( $im, 20, 0, 5, 50, $white, "SIMKAI.TTF", $obj->utf8);
ImagePNG($im);
ImageDestroy($im);
? >



Note:
You need to set the font file correctly. Please first confirm that you can use font to output English directly (without using gb2utf8).​

http://www.bkjia.com/PHPjc/317042.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/317042.htmlTechArticlegb2utf8.php file is as follows: Copy the code as follows: ?php ClassGB2UTF8 { var$gb;//To be converted GB2312 string var$utf8;//Converted UTF8 string var$CodeTable;//During the conversion process...