一个漂亮的PHP验证码

[导读] 自己导入字体，可以按照自己的额需要随便修改。<?phpclass Imagecode{private $width ;private $height;private $counts;private $distrubcode;private $fonturl;private $session;function __construc...

<?phpclass Imagecode{private $width ;private $height;private $counts;private $distrubcode;private $fonturl;private $session;function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){$this->width=$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:\Windows\Fonts\AdobeGothicStd-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();

原文转载： http://www.php100.com/html/php/hanshu/2013/1106/6350.html