Solve the GD Chinese garbled problem_PHP tutorial
今天仔细研究了下GD的一些相关技术，顺手也研究下GD中文乱码的问题。
使用GD库输出中文字符串，调用imagestring是没有用的。需要使用imagettftext()函数。imagettftext函数的具体使用就参考手册啦。
下面给个使用实例：
<span style="COLOR: #000000"><br>$pic=imagecreate(250,30); <br>$black=imagecolorallocate($pic,0,0,0); <br>$white=imagecolorallocate($pic,255,255,255); <br>$font="C://WINDOWS//Fonts//simhei.ttf"; //这里的路进需要注意下，必须是字符的路径 <br>$str ='php'.iconv('gb2312','utf-8','面对对象')." www.phpobject.net"; <br>imagettftext($pic,10,0,10,20,$white,$font,$str); <br> </span> 前面我给出一个简单的GD水印实例，只举例说明了使用图片如何水印的，这里给出一个文字水印的简单代码。
<span style="COLOR: #000000"><br><span style="COLOR: #0000bb"><?php <BR>$pic</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #0000bb">imagecreate</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">250</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">30</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">$black</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #0000bb">imagecolorallocate</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$pic</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">$white</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #0000bb">imagecolorallocate</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$pic</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">255</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">255</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">255</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">$font</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #dd0000">"C://WINDOWS//Fonts//simhei.ttf"</SPAN><SPAN style="COLOR: #007700">; <BR></SPAN><SPAN style="COLOR: #0000bb">$str </SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #dd0000">'php'</SPAN><SPAN style="COLOR: #007700">.</SPAN><SPAN style="COLOR: #0000bb">iconv</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #dd0000">'gb2312'</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #dd0000">'utf-8'</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #dd0000">'面对对象'</SPAN><SPAN style="COLOR: #007700">).</SPAN><SPAN style="COLOR: #dd0000">" www.phpobject.net"</SPAN><SPAN style="COLOR: #007700">; <BR></SPAN><SPAN style="COLOR: #0000bb">imagettftext</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$pic</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">10</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">10</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">20</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">$white</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">$font</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">$str</SPAN><SPAN style="COLOR: #007700">); <br><br></SPAN><SPAN style="COLOR: #0000bb">header</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #dd0000">"Content-type: image/jpeg"</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">$filename</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #dd0000">'../src/images/photo.jpg'</SPAN><SPAN style="COLOR: #007700">; <BR></SPAN><SPAN style="COLOR: #0000bb">$im</SPAN><SPAN style="COLOR: #007700">=</SPAN><SPAN style="COLOR: #0000bb">imagecreatefromjpeg</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$filename</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">imagecopymerge</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$im</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">$pic</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">0</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">250</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">30</SPAN><SPAN style="COLOR: #007700">,</SPAN><SPAN style="COLOR: #0000bb">50</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">imagejpeg</SPAN><SPAN style="COLOR: #007700">(</SPAN><SPAN style="COLOR: #0000bb">$im</SPAN><SPAN style="COLOR: #007700">); <BR></SPAN><SPAN style="COLOR: #0000bb">?></span> <br> </span> 
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