php ,验证码图片,乱码解决办法
php ,验证码图片,乱码
找不出哪里出错了,但是预览时就是会出现一大堆乱码
ob_clean();
header("Content-Type: image/png");
$img=@imagecreatetruecolor(50,20) or die("fjhb");
$bg_color=imagecolorallocate($img,255,255,255);
imagefill($img,0,0,$bg_color);
$border_color=imagecolorallocate($img,200,200,200);
imagerectangle($img,0,0,49,19,$border_color);
for($i=2;$i
$line_color=imagecolorallocate($img,rand(200,255),rand(200,255),rand(200,255));
imageline($img,2,$i,47,$i,$line_color);
}
$font_size=12;
$str[0]="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$str[1]="abcdefghijklmnopqrstuvwxyz";
$str[2]="01234567891234567890123456";
$imgstr[0]["s"]=$str[rand(0,2)][rand(0,25)];
$imgstr[0]["x"]=rand(2,5);
$imgstr[0]["y"]=rand(1,4);
$imgstr[1]["s"]=$str[rand(0,2)][rand(0,25)];
$imgstr[1]["x"]=$imgstr[0]["x"]+$font_size-1+rand(0,1);
$imgstr[1]["y"]=rand(1,3);
$imgstr[2]["s"]=$str[rand(0,2)][rand(0,25)];
$imgstr[2]["x"]=$imgstr[1]["x"]+$font_size-1+rand(0,1);
$imgstr[2]["y"]=rand(1,4);
$imgstr[3]["s"]=$str[rand(0,2)][rand(0,25)];
$imgstr[3]["x"]=$imgstr[2]["x"]+$font_size-1+rand(0,1);
$imgstr[3]["y"]=rand(1,3);
for($i=0;$i
$text_color=imagecolorallocate($img,rand(50,180),rand(50,180),rand(50,180));
imagechar($img,$font_size,$imgstr[$i]["x"],$imgstr[$i]["y"],$imgstr[$i]["s"],$text_color);
}
imagepng($img);
imagedestroy($img);
?>
------解决方案--------------------
乱码是浏览器显示了字符而不是图片么?
关闭浏览器重新访问这个地址试试。如果还不行,应该是header的问题。
图片输出,最好用UTF-8字符集,因为有可能会遇到中文的输出。
而UTF-8的话,就要注意BOM头了。
------解决方案--------------------
我这里测试正常哦
检查一下有没有去掉BOM头
gd库等环境是否完备
最主要的感觉还是header问题,header之前有别的输出吗?
------解决方案--------------------
lZ 是否预览是如下的乱码:

出现这样的问题是因为文件编码为:

然后你需要修改成

就OK了,预览效果:


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