A beautiful PHP Verification Code

Source: Internet
Author: User

A beautiful PHP Verification Code
Verification codes are very important in WEB applications. They are usually used to prevent users from submitting forms maliciously, such as malicious registration and login, and malicious Forum bumping.
You can import fonts as needed.

A beautiful Verification Code reflects the generosity of the website.

 width=$width;            $this->height=$height;            $this->counts=$counts;            $this->distrubcode=$distrubcode;            $this->fonturl=$fonturl;            $this->session=$this->sessioncode();            session_start();            $_SESSION['code']=$this->session;        }                 function imageout(){            $im=$this->createimagesource();            $this->setbackgroundcolor($im);            $this->set_code($im);            $this->setdistrubecode($im);            ImageGIF($im);            ImageDestroy($im);        }                private function createimagesource(){            return imagecreate($this->width,$this->height);        }        private function setbackgroundcolor($im){            $bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±³¾°ÑÕÉ«            imagefill($im,0,0,$bgcolor);        }        private function setdistrubecode($im){            $count_h=$this->height;            $cou=floor($count_h*2);            for($i=0;$i<$cou;$i++){                $x=rand(0,$this->width);                $y=rand(0,$this->height);                $jiaodu=rand(0,360);                $fontsize=rand(8,15);                $fonturl=$this->fonturl;                $originalcode = $this->distrubcode;                $countdistrub = strlen($originalcode);                $dscode = $originalcode[rand(0,$countdistrub-1)];                $color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));                imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);                            }        }        private function set_code($im){                $width=$this->width;                $counts=$this->counts;                $height=$this->height;                $scode=$this->session;                $y=floor($height/2)+floor($height/4);                $fontsize=rand(30,35);                $fonturl=C:WindowsFontsAdobeGothicStd-Bold.otf;//$this->fonturl;                                $counts=$this->counts;                for($i=0;$i<$counts;$i++){                    $char=$scode[$i];                    $x=floor($width/$counts)*$i+8;                    $jiaodu=rand(-20,30);                    $color = ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));                    imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);                }                                                }        private function sessioncode(){                $originalcode = $this->distrubcode;                $countdistrub = strlen($originalcode);                $_dscode = ;                $counts=$this->counts;                for($j=0;$j<$counts;$j++){                    $dscode = $originalcode[rand(0,$countdistrub-1)];                    $_dscode.=$dscode;                }                return $_dscode;                        }    }    Header(Content-type: image/GIF);    $imagecode=new  Imagecode(160,50);    $imagecode->imageout();


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