-
$img=imagecreatetruecolor(100, 40);
- $red=imagecolorallocate($img, 255, 0, 0);
- $green=imagecolorallocate($img, 0, 255, 0);
- $blue=imagecolorallocate($img, 0, 0, 255);
- $white=imagecolorallocate($img, 255, 255, 255);
- $black=imagecolorallocate($img, 0, 0, 0);
- //生成图片
- imagefill($img, 0, 0, $black);
- //设置验证码
- $code="";
- for($i=0;$i$code.=rand(0,9);
- }
- //验证码写到图片中
- imagestring($img, 5, 20, 15, $code, $white);
- //加点儿干扰
- for($i=0;$iimagesetpixel($img, rand(0,100), rand(0,40), $red);
- imagesetpixel($img, rand(0,100), rand(0,40), $green);
- imagesetpixel($img, rand(0,100), rand(0,40), $blue);
- }
- //再加点儿干扰
- for($i=0;$iimageline($img, rand(0,50), rand(0,20), rand(50,100), rand(20,40), $red);
- imageline($img, rand(0,50), rand(0,20), rand(50,100), rand(20,40), $green);
- imageline($img, rand(0,50), rand(0,20), rand(50,100), rand(20,40), $blue);
- }
- header("Content-type:image/png");
- imagepng($img);
- imagedestroy($img);
- ?>
|
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
