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php utf8页面验证码图片中文乱码

Jun 13, 2016 am 09:55 AM
php utf8 Chinese Garbled characters Appear picture exist develop hour code page verify

在开发时出现uft-8页面中文验证码乱码了,在baidu搜索发现了原因,下面有解决办法有需要的朋友可以参考一下。

 

 代码如下 复制代码


session_start();


//生成随机数
for($i=0;$i $rand.=dechex(rand(1,15));
}
$_SESSION['checkpic']=$rand;

$im=imagecreatetruecolor(100,30);//画板,新建一个真彩色图像

//设置颜色
$bg=imagecolorallocate($im,0,0,0);//红,绿,蓝 背景颜色
$te=imagecolorallocate($im,rand(0,255),rand(0,255),rand(0,255));//字体颜色

//画线条
for($i=0;$i $te2=imagecolorallocate($im,rand(0,255),rand(0,255),rand(0,255));
imageline($im,rand(0,100),0,rand(0,100),30,$te2);//坐标(x1,y1)到坐标(x2,y2)
}

//画点
for($i=0;$i imagesetpixel($im,rand()%100,rand()%30,$te2);
}


//输出中文
$str=iconv("gbk","utf-8","新年快乐!");//确定要绘制的中文文字
imagettftext($im,12,3,20,20,$te,'msyhbd.ttf','中文en');

//把字符串写在图像左上角
//imagestring($im,5,rand(0,50),rand(0,15),$rand,$te);

//输出图像
header("Content-type:image/jpeg");//文件类型
imagejpeg($im);

 

?>

分析原因与解决办法

 代码如下 复制代码

$str=iconv("gbk","utf-8","新年快乐!");//确定要绘制的中文文字
imagettftext($im,12,3,20,20,$te,'msyhbd.ttf','中文en');

-->>
应该这样的

 代码如下 复制代码
$str=iconv("gbk","utf-8","新年快乐!");//确定要绘制的中文文字
imagettftext($im,12,3,20,20,$te,'msyhbd.ttf',$str);
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