csharp;gutter:true;
width = $width;
$this->height = $height;
$this->codeNum = $codeNum;
}
function showImg() {
//创建图片
$this->createImg();
//设置干扰元素
$this->setDisturb();
//设置验证码
$this->setCaptcha();
//输出图片
$this->outputImg();
}
function getCaptcha() {
return $this->code;
}
private function createImg() {
$this->im = imagecreatetruecolor($this->width, $this->height);
$bgColor = imagecolorallocate($this->im, 0, 0, 0);
imagefill($this->im, 0, 0, $bgColor);
}
private function setDisturb() {
$area = ($this->width * $this->height) / 20;
$disturbNum = ($area > 250) ? 250 : $area;
//加入点干扰
for ($i = 0;$i < $disturbNum;$i++) {
$color = imagecolorallocate($this->im, rand(0, 255), rand(0, 255), rand(0, 255));
imagesetpixel($this->im, rand(1, $this->width - 2), rand(1, $this->height - 2), $color);
}
//加入弧线
for ($i = 0;$i im, rand(128, 255), rand(125, 255), rand(100, 255));
imagearc($this->im, rand(0, $this->width), rand(0, $this->height), rand(30, 300), rand(20, 200), 50, 30, $color);
}
}
private function createCode() {
$str = "23456789abcdefghijkmnpqrstuvwxyzABCDEFGHIJKMNPQRSTUVWXYZ";
for ($i = 0;$i < $this->codeNum;$i++) {
$this->code.= $str{rand(0, strlen($str) - 1) };
}
}
private function setCaptcha() {
$this->createCode();
for ($i = 0;$i < $this->codeNum;$i++) {
$color = imagecolorallocate($this->im, rand(50, 250), rand(100, 250), rand(128, 250));
$size = rand(floor($this->height / 5), floor($this->height / 3));
$x = floor($this->width / $this->codeNum) * $i + 5;
$y = rand(0, $this->height - 20);
imagechar($this->im, $size, $x, $y, $this->code{$i}, $color);
}
}
private function outputImg() {
if (imagetypes() & IMG_JPG) {
header('Content-type:image/jpeg');
imagejpeg($this->im);
} elseif (imagetypes() & IMG_GIF) {
header('Content-type: image/gif');
imagegif($this->im);
} elseif (imagetype() & IMG_PNG) {
header('Content-type: image/png');
imagepng($this->im);
} else {
die("Don't support image type!");
}
}
}</p>
<pre><code>
使用如下：
;gutter:true;
showImg();
再来个中文版的：
效果如何？自己测试，我就不放效果图了，有问题，v❤信：ama_huangama
Original: https://www.cnblogs.com/huangama/p/15581582.html
Author: 黄啊码
Title: 【黄啊码】这种PHP验证码你值得拥有（注：支持中文）
原创文章受到原创版权保护。转载请注明出处：https://www.johngo689.com/562265/
转载文章受原作者版权保护。转载请注明原作者出处！