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php 验证码 高洛峰 细说php
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前端页面index.php
';}else{echo '输入不对';} } ?>
标题：
内容:
验证码:
生成验证码图片test.php
getcode();//将验证码的图片输出$vcode->outimg();//调用方法验证码类 print.php
width = $width;$this->heigth = $height;$this->num = $num;$this->code = $this->createcode();}//获取字符的验证码function getcode(){return $this->code;}//输出验证码图形function outimg(){//创建背景 颜色 大小 边框$this->createback(); //画字 大小 字体颜色$this->outstring();//干扰元素 点 线条$this->setdisturb();//输出图像$this->printimg();}//创建背景private function createback(){//创建资源$this->img = p_w_picpathcreatetruecolor($this->width, $this->heigth);//设置随机背景颜色$bgcolor = p_w_picpathcolorallocate($this->img, rand(225, 255), rand(225, 255), rand(225, 255));//填充背景色p_w_picpathfill($this->img, 0, 0, $bgcolor);//画矩形$bordercolor = p_w_picpathcolorallocate($this->img, 0, 0, 0);p_w_picpathrectangle($this->img, 0, 0, $this->width-1, $this->heigth-1, $bordercolor);}//画字private function outstring(){for($i=0;$i<$this->num;$i ){ $color = p_w_picpathcolorallocate($this->img, rand(0, 128), rand(0, 128), rand(0, 128));$font = rand(3,5);$x = 3 ($this->width/$this->num)*$i;$y = rand(1, 5);p_w_picpathstring($this->img, $font,$x, $y, $this->code{$i}, $color);}}//设置干扰元素private function setdisturb(){//加上点数for($i=0;$i<100;$i ){$color = p_w_picpathcolorallocate($this->img, rand(0, 255), rand(0, 255), rand(0, 255));p_w_picpathsetpixel($this->img, rand(1, $this->width-2), rand(1, $this->heigth-2), $color);}//加上线条for($i=0;$i<10;$i ){$color = p_w_picpathcolorallocate($this->img, rand(0, 255), rand(0, 128), rand(0, 255));p_w_picpatharc($this->img, rand(-10, $this->width 10), rand(-10, $this->heigth 10), rand(30, 300), rand(30, 300), 55, 44, $color);}}//输出图像private function printimg(){// header("content-type:p_w_picpath/jpeg");// p_w_picpathjpeg($this->img);if(p_w_picpathtypes() & img_gif){header("content-type:p_w_picpath/gif");p_w_picpathjpeg($this->img);}elseif(p_w_picpathtypes() & img_jpeg){header("content-type:p_w_picpath/jpeg");p_w_picpathjpeg($this->img);}elseif(p_w_picpathtypes() & img_jpg){header("content-type:p_w_picpath/jpg");p_w_picpathjpeg($this->img);}elseif(p_w_picpathtypes() & img_png){header("content-type:p_w_picpath/png");p_w_picpathjpeg($this->img);}}//生成验证码private function createcode(){$codes = "23456789abcdefghijklmnpqrstuvwxyzabcdefghijklmnpqrstuvwxyz";$code = "";for($i=0;$i<$this->num;$i ){$code .=$codes{rand(0,strlen($codes)-1)};}return $code;}//释放图像资源function __destruct(){p_w_picpathdestroy($this->img);}}转载于:https://blog.51cto.com/11410485/1842156
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