PHP utf8 page verification code picture Chinese garbled_PHP tutorial

During development, the Chinese verification code on the uft-8 page appeared garbled. I found the reason by searching on Baidu. There are solutions below for friends in need to refer to.

for($i=0;$i<4;$i++){ $rand.=dechex(rand(1,15));

The code is as follows

代码如下

复制代码

session_start(); //生成随机数 for($i=0;$i<4;$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<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,$te,'msyhbd.ttf','中文en'); //把字符串写在图像左上角 //imagestring($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); ?>

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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');

session_start();

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);

//Generate random numbers

}

$_SESSION['checkpic']=$rand;

$im=imagecreatetruecolor(100,30);//Drawboard, create a new true color image //Set color $bg=imagecolorallocate($im,0,0,0);//Red, green, blue background color $te=imagecolorallocate($im,rand(0,255),rand(0,255),rand(0,255));//Font color //Draw lines 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);//Coordinates (x1,y1) to coordinates (x2,y2) } //Draw dots

for($i=0;$i<200;$i++){

imagesetpixel($im,rand()%100,rand()%30,$te2);