Class GB2UTF8 - {
- var $gb; // 待轉換的GB2312字串
- var $utf8; // 轉換後的UTF8字串
- var $CodeTable; // 轉換過程中使用的GB2312代碼檔案數組
- var $ErrorMsg; // 轉換過程之中的錯誤訊息
function GB2UTF8($InStr="") - {
- $this->gb=$InStr;
- $this->SetGb2312();
- ($this->gb=="")?0:$this->Convert();
- }
function SetGb2312($InStr="gb2312.txt") - { // 設定gb2312代碼檔案，預設為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($value,7,6);
- }
- }
function Convert() - { // 轉換GB2312字串到UTF8字串，需預先設定$gb
- $this->utf8="";
- if(!trim($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;
- }
- }
- ?>
複製代碼測試下，看看效果：
- 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中國456def測試正確";
- $obj->Convert();
- ImageTTFText($im, 20, 0, 5, 50, $white, "SIMKAI.TTF", $obj->utf8);
- ImagePNG($im);
- ImageDestroy($im);
- ?>
複製代碼註解：需要正確設定font檔案，請先確認是否能夠使用font直接（不使用gb2utf8）輸出英文。 |
