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PHP code for GB2312 and UTF8 encoding conversion

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Release： 2016-07-25 09:08:07
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  3. Class GB2UTF8

  4. {
  5. var $gb; // GB2312 string to be converted
  6. var $utf8; // Converted UTF8 string
  7. var $CodeTable; // Array of GB2312 code files used during the conversion process
  8. var $ErrorMsg; // Error message during the conversion process

  9. function GB2UTF8($InStr="")

  10. {
  11. $this- >gb=$InStr;
  12. $this->SetGb2312();
  13. ($this->gb=="")?0:$this->Convert();
  14. }

  15. function SetGb2312($InStr="gb2312.txt")

  16. { // Set the gb2312 code file, the default is gb2312.txt
  17. $this->ErrorMsg="";
  18. $tmp=@file($InStr );
  19. if (!$tmp) {
  20. $this->ErrorMsg="No GB2312";
  21. return false;
  22. }
  23. $this->CodeTable=array();
  24. while(list($key,$ value)=each($tmp)) {
  25. $this->CodeTable[hexdec(substr($value,0,6))]=substr($value,7,6);
  26. }
  27. }

  28. function Convert()

  29. { // To convert GB2312 string to UTF8 string, you need to set $gb
  30. $this->utf8="";
  31. if(!trim($this-> gb) || $this->ErrorMsg!="") {
  32. return ($this->utf8=$this->ErrorMsg);
  33. }
  34. $str=$this->gb;

  35. while($str) {

  36. if (ord(substr($str,0,1))>127)
  37. {
  38. $tmp=substr($str,0,2);
  39. $ str=substr($str,2,strlen($str));
  40. $tmp=$this->U2UTF8(hexdec($this->CodeTable[hexdec(bin2hex($tmp))-0x8080]));
  41. for($i=0;$i$this->utf8.=chr(substr($tmp,$i,3));
  42. }
  43. else
  44. {
  45. $tmp=substr($str,0,1);
  46. $str=substr($str,1,strlen($str));
  47. $this->utf8.=$tmp;
  48. }
  49. }
  50. return $this->utf8;
  51. }

  52. function U2UTF8($InStr)

  53. {
  54. for($i=0;$i$ str="";
  55. if ($InStr < 0x80) {
  56. $str.=ord($InStr);
  57. }
  58. else if ($InStr < 0x800) {
  59. $str.=(0xC0 | $InStr> >6);
  60. $str.=(0x80 | $InStr & 0x3F);
  61. }
  62. else if ($InStr < 0x10000) {
  63. $str.=(0xE0 | $InStr>>12);
  64. $ str.=(0x80 | $InStr>>6 & 0x3F);
  65. $str.=(0x80 | $InStr & 0x3F);
  66. }
  67. else if ($InStr < 0x200000) {
  68. $str.=(0xF0 | $InStr>>18);
  69. $str.=(0x80 | $InStr>>12 & 0x3F);
  70. $str.=(0x80 | $InStr>>6 & 0x3F);
  71. $str.= (0x80 | $InStr & 0x3F);
  72. }
  73. return $str;
  74. }
  75. }
  76. ?>

Copy the code

Test it and see the effect:

  2. Header("Content-type: image/png");
  3. $im = imagecreate(400,300);
  4. $black = ImageColorAllocate($im, 0,0,0);
  5. $white = ImageColorAllocate($im, 184,44,6);
  6. include("gb2utf8.php");
  7. $obj=new gb2utf8();
  8. $obj->gb="123abcChina 456def test is correct";
  9. $obj->Convert();
  10. ImageTTFText($im, 20, 0, 5, 50, $white, "SIMKAI.TTF", $obj->utf8);
  11. ImagePNG($im);
  12. ImageDestroy ($im);
  13. ?>
Copy code

Notes: The font file needs to be set correctly. Please first confirm whether you can use font to output English directly (without using gb2utf8).



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php进行GB2312与UTF8编码转换的代码
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