What to do if the php verification code is garbled

Solution to garbled php verification code: First determine the Chinese verification code text to be drawn; then pass "imagettftext($im,12,3,20,20,$te,'msyhbd.ttf',$ str);" method can solve the problem of garbled characters.

Recommended: "PHP Video Tutorial"

php utf8 page verification code picture Chinese garbled code

During development, the Chinese verification code on the uft-8 page was garbled. I found the reason by searching on Baidu. Friends who need it can refer to the solution below. The code is as follows: ? session_start(); // Generate random numbers for ( $i =0; $i 4; $i ){ $rand .= dechex (rand(1,15));

The Chinese verification code on the uft-8 page appears garbled during development Yes, I found the reason by searching on Baidu. Friends who need it can refer to the solution below. The code is as follows:

<? 
session_start(); 
 
//生成随机数 
for($i=0;$i<4;$i++){ 
$rand.=dechex(rand(1,15)); 
} 
$_SESSION[&#39;checkpic&#39;]=$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<3;$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<200;$i++){ 
imagesetpixel($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,$te,&#39;msyhbd.ttf&#39;,&#39;中文en&#39;); 
//把字符串写在图像左上角 
//imagestring($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); 
 
?>

Analyze the cause and solution. The error code is as follows:

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

Correct The code should look like this:

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

The above is the detailed content of What to do if the php verification code is garbled. For more information, please follow other related articles on the PHP Chinese website!