width = $width;
$this->height = $height;
$this->verify_nums = $verify_nums;
$this->verify_type = $verify_type;
$this->p_w_picpath_type = $p_w_picpath_type;
$this->verify_code = $this->setVerifyCode();
$this->res = $this->createRes();
}
//唯一供别人调用的输出方法
public function show()
{
$this->createRes();
$this->fillBackground();
$this->fillPix();
$this->fillArc();
$this->fillVerifyCode();
$this->outPutImg();
}
//准备画布
private function createRes()
{
return p_w_picpathcreatetruecolor($this->width, $this->height);
}
//创建颜色(深色、亮色)
private function createDarkColor()
{
/*$res = $this->res;
$color1 = mt_rand(0,120); //red
$color2 = mt_rand(0,120); //green
$color3 = mt_rand(0,120); //blue
return p_w_picpathcolorallocate($res,$color1,$color2,$color3);*/
return p_w_picpathcolorallocate($this->res,mt_rand(0,120),mt_rand(0,120),mt_rand(0,120));
}
//创建亮色给字符串用
private function createLightColor()
{
return p_w_picpathcolorallocate($this->res,mt_rand(130,255),mt_rand(130,255),mt_rand(130,255));
}
//填充背景色
private function fillBackground()
{
/*$res = $this->res;
$x = 0;
$y = 0;
$color = $this->createDarkColor();
return p_w_picpathfill($res,$x,$y,$color);*/
p_w_picpathfill($this->res,0,0,$this->createDarkColor());
}
//添加干扰元素
private function fillPix()
{
$nums = ($this->width * $this->height) / 20;
for ($i=0; $i < $nums; $i++) {
$x = mt_rand(0,$this->width);
$y = mt_rand(0,$this->height);
p_w_picpathsetpixel($this->res, $x, $y, $this->createDarkColor());
}
}
//添加干扰弧线
private function fillArc()
{
for ($i=0; $i < 20 ; $i++) {
$cx = mt_rand(0,$this->width); //中心点x坐标
$cy = mt_rand(0,$this->height); //中心点y坐标
$w = mt_rand(10,$this->width/2); //弧线宽度
$h = mt_rand(5,$this->height/2); //弧线高度
$s = mt_rand(0,180); //起点角度
$e = mt_rand(181,360); //终点角度
p_w_picpatharc($this->res,$cx,$cy,$w,$h,$s,$e,$this->createDarkColor());
}
}
//产生验证码字符
private function setVerifyCode()
{
$verify_code = '';
switch ($this->verify_type) {
case 1:
//纯数字的验证码取4个
$str = join('',array_flip(range(0,9),$this->verify_nums));
break;
case 2:
$str = join('',array_rand(array_flip(range('a','z')),$this->verify_nums));
break;
case 3:
$str = 'qwertyuiplkjhgfdsaxcvbnmQWERTYUPLKJHGFDSAXCVBNM23456789';
$str = substr(str_shuffle($str), 0,$this->verify_nums);
break;
default:
die('请输入指定验证码的字符类型
');
}
$verify_code = $str;
return $verify_code;
}
//把字符串弄到画布上 $this->fillVerifyCode = 'abda'
//弱类型语言就比较随意
private function fillVerifyCode()
{
for ($i=0; $i < $this->verify_nums; $i++) {
$every_width = $this->width /$this->verify_nums;
/*mt_rand($every_width * 0,$every_width);
mt_rand($every_width * 1,$every_width);
mt_rand($every_width * 2,$every_width);
mt_rand($every_width * 3,$every_width);
$x = mt_rand((($this-width / $this->verify_nums) * $i) + 5,($this-width / $this->verify_nums) * ($i+1) - 5) ;*/
$x = mt_rand($every_width * $i + 10 ,$every_width * ($i + 1) -10);
$y = mt_rand(10,$this->height - 20);
p_w_picpathchar($this->res, 5, $x, $y, $this->verify_code[$i], $this->createLightColor());
}
}
//输出图片
private function outPutImg()
{
header('Content-type:p_w_picpath/'.$this->p_w_picpath_type);
$func = 'p_w_picpath' . $this->p_w_picpath_type;
$func($this->res);
}
public function __get($name)
{
if ($name == 'verify_code') {
return $this->verify_code;
}
}
//销毁资源
public function __destruct()
{
p_w_picpathdestroy($this->res);
}
}
$v = new Verify();
$v->show();
网站标题:PHP中面向对象的验证码类
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http://cxhlcq.com/article/jhheoe.html