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一段将GB编码转换为utf8的代码_PHP

WBOYOriginal: 2016-06-01 12:34:47857browse

一段将GB编码转换为utf8的代码

gb2utf8.php 文件如下：

 Class GB2UTF8 { var $gb; // 待转换的GB2312字符串 var $utf8; // 转换后的UTF8字符串 var $CodeTable; // 转换过程中使用的GB2312代码文件数组 var $ErrorMsg; // 转换过程之中的错误讯息 function GB2UTF8($InStr="") { $this->gb=$InStr; $this->SetGb2312(); ($this->gb=="")?0:$this->Convert(); } function SetGb2312($InStr="gb2312.txt") { // 设置gb2312代码文件，默认为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($value,7,6); } } function Convert() { // 转换GB2312字符串到UTF8字符串，需预先设置$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($i=0;$istrlen ($tmp);$i+=3) $this->utf8.=chr(substr($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($i=0;$icount($InStr);$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; } } 

测试文件如下：

<font color="#000000"><br><font face="新宋体"><font color="#0000bb">php <br>Header</font><font color="#007700">(</font><font color="#dd0000">"Content-type: image/png"</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">$im </font><font color="#007700">= </font><font color="#0000bb">imagecreate</font><font color="#007700">(</font><font color="#0000bb">400</font><font color="#007700">,</font><font color="#0000bb">300</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">$black </font><font color="#007700">= </font><font color="#0000bb">ImageColorAllocate</font><font color="#007700">(</font><font color="#0000bb">$im</font><font color="#007700">, </font><font color="#0000bb">0</font><font color="#007700">,</font><font color="#0000bb">0</font><font color="#007700">,</font><font color="#0000bb">0</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">$white </font><font color="#007700">= </font><font color="#0000bb">ImageColorAllocate</font><font color="#007700">(</font><font color="#0000bb">$im</font><font color="#007700">, </font><font color="#0000bb">184</font><font color="#007700">,</font><font color="#0000bb">44</font><font color="#007700">,</font><font color="#0000bb">6</font></font><font face="新宋体"><font color="#007700">); <br>include(</font><font color="#dd0000">"gb2utf8.php"</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">$obj</font><font color="#007700">=new </font><font color="#0000bb">gb2utf8</font></font><font face="新宋体"><font color="#007700">(); <br></font><font color="#0000bb">$obj</font><font color="#007700">-></font><font color="#0000bb">gb</font><font color="#007700">=</font><font color="#dd0000">"123abc中国456def测试正确"</font></font><font face="新宋体"><font color="#007700">; <br></font><font color="#0000bb">$obj</font><font color="#007700">-></font><font color="#0000bb">Convert</font></font><font face="新宋体"><font color="#007700">(); <br></font><font color="#0000bb">ImageTTFText</font><font color="#007700">(</font><font color="#0000bb">$im</font><font color="#007700">, </font><font color="#0000bb">20</font><font color="#007700">, </font><font color="#0000bb">0</font><font color="#007700">, </font><font color="#0000bb">5</font><font color="#007700">, </font><font color="#0000bb">50</font><font color="#007700">, </font><font color="#0000bb">$white</font><font color="#007700">, </font><font color="#dd0000">"SIMKAI.TTF"</font><font color="#007700">, </font><font color="#0000bb">$obj</font><font color="#007700">-></font><font color="#0000bb">utf8</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">ImagePNG</font><font color="#007700">(</font><font color="#0000bb">$im</font></font><font face="新宋体"><font color="#007700">); <br></font><font color="#0000bb">ImageDestroy</font><font color="#007700">(</font><font color="#0000bb">$im</font><font color="#007700">);</font><br></font></font><br>

说明：
需要正确设置font文件，请先确认可以使用font直接（不使用gb2utf8）输出英文。

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