Php code conversion implements gbk encoding to utf8

Php code conversion implements gbk encoding to utf8

Class gb2utf8 { Var $ gb; // The gb2312 string to be converted Var $ utf8; // The converted utf8 string Var $ codetable; // array of gb2312 Code files used during conversion Var $ errormsg; // error message during conversion Function gb2utf8 ($ instr = "") { $ This-> gb = $ instr; $ This-> setgb2312 (); ($ This-> gb = "")? 0: $ this-> convert (); } Function setgb2312 ($ instr = "gb2312.txt ") {// Set the gb2312code file to 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 ); } } // (Script School bbs.it-home.org) Function convert () {// Convert the gb2312 string to the utf8 string. you must set $ gb in advance. $ This-> utf8 = ""; If (! Trim ($ this-> gb) | $ this-> errormsg! = ""){ Return ($ this-> utf8 = $ this-> errormsg ); } $ Str = $ this-> gb; While ($ str ){ If (ord (substr ($ str, 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; } } ?> Test example: // Php code conversion Header ("content-type: image/png "); $ Im = imagecreate (400,300 ); $ Black = imagecolorallocate ($ im, 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 ); ?> Code description: you need to correctly set the font file. make sure that you can use font directly (without gb2utf8) to output English.